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The 8 Best used dive computers of 2025

Are you trying to find used dive computers among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling used dive computers on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 15 hours of research and did 26 used dive computers tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best used dive computers you can buy today

No. 1
SEAC Action, Dive Computer with Scuba and Freediving Mode, Dive Logbook, Dive Planner, Safety Alarms, Black/Blue
  • Wrist-mounted diving computers For scuba and freediving. Easy to use. Scuba, gauge and freediving mode. Improved resistance. Lcd screen with contrast and adjustable-intensity backlighting. Long-lasting CR2450 battery.
  • Scuba mode: full control of dive profiles; bühlmann ZHL-16C algorithm for 1 or 2 mixes (air, Nitrox) with O2 max 99%. 40H/5” records. Alarms: mod, deco stop, ascent. No fly and desaturation time, altitude warning. Ndl only dive planner.
  • Gauge mode: depth gauge and stopwatch for managing your dive profiles independently.
  • Free diving mode: dive/surface time, current/maximum depth. Logbook memory, 18 hours of activity with Records every 2”
  • Dive Manager software for Mac/PC (requires windows 10), Available free of charge at seacsub. Download data via USB cable (sold separately).
SaleNo. 2
Mares Quad Wrist Dive Computer - Ergonomic Multi-Gas Scuba Diving Accessory with Large Easy-to-Read Screen & Mirrored Button Function for Enhanced Underwater Navigation, Black/Blue
  • LARGE AND CLEAR DISPLAY - Equipped with a "Jumbo Size" screen that features three lines of large-format information, the Mares Quad displays critical dive data in a highly visible and easy-to-read layout, enhancing clarity and usability underwater
  • INTUITIVE BUTTON NAVIGATION - Four strategically placed buttons provide an intuitive, mirrored control system during dives; the top buttons display depth information, while the lower ones display oxygen-related data, making it straightforward to navigate mid-dive
  • MULTI-GAS SWITCHING CAPABILITY - This advanced scuba dive computer supports multi-gas settings with up to 99% oxygen, enabling divers to switch gases mid-dive to reduce decompression time and adapt seamlessly to varying dive profiles
  • CUSTOMIZABLE DATA & DECO PLANNER – The Quad wrist dive computer offers customizable auxiliary information fields, a Deco Dive Planner, and a "Runaway Deco Alarm" for enhanced flexibility and safety alerts, making it ideal for adapting to diverse dive conditions
  • EASY DATA TRANSFER & UPDATES - Capable of downloading logbook data and firmware updates via the Mares Dive Organizer Program or the Mares Bluelink Pro for wireless updates through mobile apps, keeping your dive computer current with the latest Mares innovations
No. 3
DIVA EN CAMINO DEC Office Chair Cover with Durable Zipper - Stretchable Universal Computer Chair Covering - Smooth Soft Polyester Slipcovers for Rotating Boss Chair, High Back Chair
  • 【Large Chair Cover】- The package contains 1 x Office Chair Cover (CHAIR NOT INCLUDED). Back Height: 27.5-31.4"; Back Width: 17.7-22.8"; Back Thickness: 5.1-6.6"; Seat Length: 17.7-22.8" Seat Width:17.7-23.6". Please measure your chair size before buying.
  • 【Full Protection】- The anti-slip chair cover is stain-resistant, it can prevent dulling and damage from normal dust and wear. Also it protects your valued office chair from accidental scratches or pawprints by your furry office companion.
  • 【Super Stretchy & Thick Fabric】- Our office chair slipcover adds extra 15% spandex knit fabric, so it’s extremely stretchy and allows to fit perfectly for most office chairs: boss chair, rotating chair, and more. By using 180 GSM of high-quality, durable, and thick fabric, our covers will not easily pill and fade. It is skin-friendly and breathable for all seasons, and it will prevent sweat marks on chairs.
  • 【Extra Strong Zipper】- Our stretchable cover uses extra strong zipper, which makes it an extremely resilient computer chair seat cover as it tightly wraps the seat of the chair as well as the back of the chair to prevent slippage. The elastic edge aids in holding the cover securely in its place.
  • 【Wide Application and Easy to Care】- This computer chair cover comes in more than 15 colors and can revitalize your home-office décor. It is an easy way to give new life to your old or peeling chair. It is ideal for bosses, office workers, students, and pet lovers. For best results, wash in cold water and tumble dry on low heat to keep color vivid. Iron on low temperature, if needed.
No. 4
Crash Dive
  • World War II submarine warfare
  • Tactical planning and execution
  • Enemy ship AI
  • Choose your gameplay style: Stealthy or aggresive
  • English (Publication Language)
SaleNo. 6
Cressi Leonardo, black/grey
  • A single button Dive Computer makes it effortless to set Air, Nitrox and Gauge modes. Ideal for beginners in Scuba Diving. It is easy to use and easy to read all the information due to the high-definition screen that gives large numerical displays.
  • FO2 adjustable between 21% and 50%. PO2 adjustable between 1.2 bar and 1.6 bar. CNS oxygen toxicity graphic indicator.
  • Three levels of user adjustable conservatism. Visual and distinct, easy-to-hear audible alarms
  • User-selectable deep stop function. Adjustable unit of measure: imperial or metric.
  • Battery life indicator. The device is powered by a long-lasting CR2430 button battery which can be replaced by an authorized Cressi center by verifying perfect watertightness.
  • The Leonardo 2.0 dive computer is developed made in Italy by Cressi, a brand pioneer in Scuba Diving, Snorkeling and Freediving equipment since 1946.
SaleNo. 7
Suunto Core Classic, Outdoor Watch, All Black
  • Suunto Core: This classic outdoor sports watch is packed with intelligent features like a Storm Alarm, Altimeter, Barometer and compass to keep you informed of conditions while you hike, bike, or camp
  • Essential for Adventure: This watch has dual times, date display, and alarm, plus predicted times for sunrise and sunset to help maximize your daylight hours and a depth meter accurate up to 30 feet
  • Suunto Sports Watches: Versatile and durable, Suunto sports watches are great for running, swimming, cycling, gym workouts, hiking, and other outdoor sports; Whatever your needs, Suunto has a watch for you
  • Adventure Starts Here: Combining Scandinavian design with ultra durable materials, our watches track your sports, daily activity, and sleep to help you keep life, training and recovery in balance
  • Authentic Heritage: Founded in 1936, Suunto brings over 80 years of high quality heritage craftsmanship, relentless accuracy, and pioneering innovation to our watches, compasses, and dive products
No. 8
Aqua Lung I300c Wrist Dive Computer with Bluetooth Black/Blue
125 Consomer Reviews
Aqua Lung I300c Wrist Dive Computer with Bluetooth Black/Blue
  • Bluetooth connectivity. Now equipped with Bluetooth technology that offers the user a simple and quick wireless exchange of dive log information with the DiverLog app and fast connections with their buddies on social media
  • 4 operating modes. Air, Nitrox, Gauge (with run timer) and Free Dive (tracks calculations to allow switching between DIVE and Free)
  • User-changeable battery and data retention. Maintains settings and calculations between battery changes
  • 3 Gas computer. Able to switch up to three gases underwater
  • Backlighting. For easy reading in low light
No. 9
Aqua Lung I200c Wrist Dive Computer Blue
  • 4 operating modes. Air, Nitrox, Gauge (with run timer), and Free Dive (tracks calculations to allow unrestricted switching between Dive and Free)
  • User-changeable standard battery and data retention. Uses globally available standard batteries found at supermarkets and drugstores. Maintains settings and calculations between battery changes
  • High visibility LED alarm light. For additional diving safety
  • Switch between up to 2 Nitrox mixes. Mixes up to 100% O2 with no restriction
No. 10
Quantum Care: A Deep Dive into AI for Health Delivery and Research
  • Amazon Kindle Edition
  • Mahajan, Rohit (Author)
  • English (Publication Language)
  • 198 Pages - 02/21/2023 (Publication Date) - Advantage Books (Publisher)
No. 11
Shearwater Research Peregrine Dive Computer
293 Consomer Reviews
Shearwater Research Peregrine Dive Computer
  • Package dimensions: 6.69 inch L x 4.45 inch W x 4.33 inch H
  • Two-button interface: simple to navigate, state-aware menu structure. 316 stainless steel buttons
  • Battery life per charge is up to about 30 hours on medium brightness level
  • USB wireless charging station is included
SaleNo. 12
Deep Dive: Exploring the Real-world Value of Open Source Intelligence
55 Consomer Reviews
Deep Dive: Exploring the Real-world Value of Open Source Intelligence
  • Baker, Rae L. (Author)
  • English (Publication Language)
  • 544 Pages - 05/09/2023 (Publication Date) - Wiley (Publisher)
No. 14
Greshare Gaming Mouse,7 Colors Backlit Optical Game Wireless Mice Ergonomic with 2400 DPI and 6 Buttons 4 Shooting with Nano Receiver for Computer/Win/Mac/Linux/Andriod/iOS,Pink.
  • Wireless mute mechanical optical Mouse,Built-in rechargeable 600HMA large capacity battery for extended service life.Full charge can be used for one month.
  • Use popular DVA cartoon modeling with 7 colors backlit,Using matte material, excellent grip, light and durable, ergonomic design.
  • Save energy and save power,enter the standby state after stopping, the standby current is 0.4mA, and Stop for 15 seconds without moving to sleep, the sleep current is 0.08mA,wake up in 0.1 seconds after touching, and work immediately.
  • On-The-Fly DPI Switching: 4 Adjustable DPI Switch: 2400, 1600, 1200, 800 control your own speed freely.
  • No need additional drivers,Just open the switch at the bottom of the mouse,Insert the receiver into computer USB port, plug and play,Optical engine,move more steadily and more accurately;wireless transmission up to 10 meters.
No. 15
The Hiding Place
1,054 Consomer Reviews
The Hiding Place
  • Amazon Prime Video (Video on Demand)
  • Julie Harris, Jeannette Clift, Eileen Heckart (Actors)
  • James F. Collier (Director) - Allen Sloane (Writer) - Frank R. Jacobson (Producer)
  • English (Playback Language)
  • English (Subtitle)
  • Audience Rating: PG (Parental Guidance Suggested)
No. 16
CoolBELL Convertible Backpack Shoulder Messenger Bag Laptop Case Business Briefcase Leisure Handbag Multi-functional Travel Rucksack Fits 15.6 Inch Laptop For Men/Women (Canvas Dark Grey)
  • Dimensions: 16.5 x 4.1 x 12.5 inches; Fits up to 15.6 inches laptop on the market, still more room for 2-3 days summer clothes, intimate design for your business trip.
  • Three carrying styles. You could use it as backpack shoulder bag and messenger bag. Also the straps can be hidden when you use it a messenger bag and shoulder bag. The handle could be hidden in a pocket with zipper when use it as backpack, not only milti-funciton, but good-looking shape.
  • Two outside front pockets, convenient to oganize your items you want to carry,easily to keep your documents,books or folders.
  • Roomy laptop compartment and accessory compartment.Special design laptop compartment with Telescopic belt provides more protection for your laptop. Double thick foam padd inside provides any accidential impact.
  • Lightweight design is easy for carrying. The top grab handle offers quick grab-and-go style. Ergonomic design ensures the dispersion of gravity of the fulled bag.
  • THIS ITEM IS NOT INTENDED FOR USE BY CHILDREN 12 AND UNDER.
No. 17
SEAC Driver, Wrist-Mount Freediving Computer with Data Download System, one Size
  • Seac Sub Driver Computer, Owner's Manual
  • Seac Sub Driver Computer:
  • Wrist-Mount Computer for Freediving
  • Constantly Monitor Performance, Dive Values & Recovery Times
  • Extensive Internal Memory, w/Logbook Downloadable to PC or Mac
No. 18
Virtual Reality in Africa Joke
  • Features:
  • 1. HD Graphics
  • 2. Huge world Africa
  • 3. A bunch of different animals
  • Chinese (Publication Language)
No. 19
Computers V. Crime
  • Amazon Prime Video (Video on Demand)
  • Keith David (Actor)
  • NOVA (Director) - Llewellyn M. Smith (Writer) - Julia Cort (Producer)
  • English (Playback Language)
  • English (Subtitle)

How to choose a good used dive computers

Does the idea of finding a fantastic used dive computers make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in used dive computers. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top used dive computers products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top used dive computers on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top used dive computers brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top used dive computers based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the used dive computers were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good used dive computers, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your used dive computers.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting used dive computers for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our used dive computers. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what used dive computers should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on used dive computers.