Garmin Descent Mk3i 43mm Air-Integrated Dive Computer Smartwatch
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Garmin Descent Mk3i - Air-Integrated Dive Computer Smartwatch
Description
The Garmin Descent Mk3i is a premium air-integrated dive computer and smartwatch built for serious divers who demand the best both underwater and on land. Powered by SubWave sonar-based communication technology, it lets you exchange diver-to-diver messages and monitor tank pressures for up to 8 tanks without any additional wires or hardware. The 43 mm case pairs a brilliant 1.2" AMOLED color display with a sapphire lens and leakproof metal inductive buttons, all housed in a dive-rated titanium-backed case that handles depths to 200 meters.
Beyond diving, the Mk3i is a full-featured multisport training watch with DiveView color maps, surface GPS, comprehensive health monitoring, and smart connectivity. Whether you're planning your next dive, tracking a trail run, or heading out for a surf session, this watch is engineered to keep up with every dimension of your active life.
Key Features
- SubWave Sonar Networking: Exchange preset diver-to-diver messages up to 30 meters and monitor tank pressures and depth for up to 8 divers within 10 meters - no cables required.
- Air Integration: Pairs with Descent T2 transceivers (sold separately) for integrated pressure monitoring on up to 8 tanks via the SubWave sonar data network.
- 200-Meter Dive Rating: Leakproof metal inductive buttons and a titanium-backed case deliver serious dive durability at depth.
- 1.2" AMOLED Display: Bright, 390 x 390 pixel color touchscreen with sapphire lens for excellent visibility in any light - including Lume Mode for low-light and night dives.
- Multiple Dive Modes: Supports single and multiple gas dives (nitrox, trimix), gauge, apnea, apnea hunt, and closed-circuit rebreather modes.
- Battery Life - Up to 30 Hours in Dive Mode: Plus up to 10 days in smartwatch mode and up to 28 hours GPS-only for all-day adventure capability.
- DiveView Color Maps: Bathymetric depth contours and 4,000+ dive sites preloaded on your wrist for site discovery and orientation.
- NDL Aware Depth Metrics: Real-time depth guidance that shows how specific depth changes impact your no-decompression limit to help extend bottom time safely.
- Dive Readiness Tool: Garmin-first technology that factors in sleep, exercise, stress, and jet lag to help you assess when you are best prepared to dive.
- 32 GB Storage & Music: Download songs from Spotify, Deezer, Amazon Music, or YouTube Music for phone-free listening during surface activities.
- Multisport Activity Profiles: Includes running, cycling, swimming, hiking, surfing, skiing, golf, and dozens more - plus Garmin Coach training plans.
- Physical Size - 43 x 43 x 14.3 mm, 68.3 g with band: Fits wrist circumferences of 128-224 mm (silicone band) or 128-360 mm (extra long silicone band).
Model Options & Which to Choose
- Descent Mk3i - 43 mm: The more compact case size at 43 x 43 x 14.3 mm and 68.3 g with band. Ideal for divers and athletes who prefer a lighter, lower-profile watch that still delivers the full air-integrated Mk3i feature set. Available in Bronze PVD Titanium with French Gray Silicone Band and Carbon Gray DLC Titanium with Black Silicone Band.
- Descent Mk3i - 51 mm: The larger case offers a bigger display footprint for divers who want maximum screen real estate and a bolder wrist presence. Available in Carbon Gray DLC Titanium with DLC Titanium Band, Carbon Gray DLC Titanium with Black Silicone Band, and Silver and Black PVD Titanium with Black/Pebble Gray Silicone Band. The 51 mm is also available as a bundle that includes the Descent T2 transceiver.
Shipping
Ships free! Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.
What's Included
- Garmin Descent Mk3i - 43 mm watch
- French Gray silicone band
- Garmin proprietary clip charger
Why You'll Love It
The Descent Mk3i represents the pinnacle of Garmin's dive computer engineering, trusted by serious divers and adventure athletes who refuse to compromise on capability or build quality. With SubWave sonar communication built right into the watch, you get a level of underwater connectivity that simply doesn't exist in other dive computers at any price. The premium titanium construction, sapphire lens, and AMOLED display aren't just luxury touches - they're purpose-built to perform in the most demanding underwater environments dive after dive. Out of the water, the Mk3i transitions seamlessly into a world-class multisport and wellness watch, covering everything from VO2 max tracking to turn-by-turn navigation with preloaded topo and ski maps. Garmin's industry-leading GPS accuracy via SatIQ technology ensures you always know exactly where you are, whether on the surface or tracking a dive entry point. For the diver who lives an active life above and below the water, the Descent Mk3i is the one watch that does it all without compromise.
Product Specifications
| Case Size | 43 x 43 x 14.3 mm |
|---|---|
| Display | 1.2" (30.4 mm) AMOLED, 390 x 390 pixels, touchscreen |
| Lens Material | Sapphire crystal |
| Bezel Material | Bronze PVD coated titanium (this variant) or Diamond-like Carbon (DLC) coated titanium |
| Case Material | Fiber-reinforced polymer with titanium rear cover |
| Strap Material | Silicone |
| Weight (with band) | 68.3 g (silicone band); 49.3 g without band |
| Water Rating | Dive (200 meters) |
| Battery - Smartwatch | Up to 10 days (4 days always-on) |
| Battery - GPS Only | Up to 28 hours (22 hours always-on) |
| Battery - Dive Mode | Up to 30 hours |
| Battery - Dive Mode with Air Integration | Up to 15 hours |
| Battery - Max Battery GPS | Up to 44 hours |
| Battery - Expedition GPS | Up to 10 days |
| Battery - All Satellite + Multi-band | Up to 17 hours (14 hours always-on) |
| Battery - Music | Up to 6 hours |
| Memory/Storage | 32 GB |
| Connectivity | Bluetooth, ANT+, Wi-Fi, SubWave |
| Charging Method | Garmin proprietary clip charger |
| QuickFit Band Compatible | Yes (20 mm) |
| Wrist Circumference (silicone band) | 128-224 mm |
| Wrist Circumference (extra long silicone band) | 128-360 mm |
| Smartphone Compatibility | iPhone, Android |
| Sensors | GPS, GLONASS, Galileo, SatIQ, Garmin Elevate heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer, thermometer, ambient light sensor, depth sensor |
FAQ
Do I need to buy additional equipment for air integration?
Yes - the Descent Mk3i watch itself supports air integration, but you will need to purchase Descent T2 transceivers separately and attach them to your tank valves. The T2 transceivers communicate with the watch via SubWave sonar technology. If you want everything included at once, look for the Descent Mk3i & T2 bundle, which includes the transceiver with the watch.
What is the difference between the Descent Mk3 and the Descent Mk3i?
The Descent Mk3 is an advanced dive computer and smartwatch. The Mk3i adds air integration - meaning it can pair with Descent T2 transceivers for tank pressure monitoring and diver-to-diver messaging using SubWave sonar technology. If you plan to dive with air integration, the Mk3i is the right choice. The T2 transceivers are sold separately unless you purchase the bundle version.
What is the difference between the 43 mm and 51 mm versions?
Both sizes offer the same core Mk3i feature set including air integration, SubWave sonar, and dive modes. The 43 mm is lighter and more compact, making it a great choice for divers with smaller wrists or those who prefer a lower-profile watch. The 51 mm has a larger display and a bolder wrist presence, which some divers prefer for easier readability underwater. The 51 mm is also available in a bundle that includes a Descent T2 transceiver.
Can the Descent Mk3i be used as an everyday smartwatch?
Absolutely. The Mk3i is a full-featured smartwatch with up to 10 days of battery life in smartwatch mode, music storage, Garmin Pay contactless payments, smart notifications, heart rate monitoring, sleep tracking, and dozens of sport activity profiles. It transitions seamlessly from dive computer to everyday wellness and fitness tracker.
What dive modes are supported?
The Descent Mk3i supports single and multiple gas dives (including nitrox and trimix), gauge, apnea, apnea hunt, and closed-circuit rebreather modes. You can also customize dive screens by adding additional data fields for each mode.
Does the watch come with maps preloaded?
Yes. The Descent Mk3i comes with DiveView color maps featuring bathymetric depth contours and over 4,000 dive sites, as well as multicontinent TopoActive maps for land navigation and SkiView maps for more than 2,000 ski resorts worldwide.
Thank you for trusting us with your order! This product is shipped directly from the manufacturing warehouse to get to customers all over the U.S. as soon as possible!
While many of our products are prepared and shipped out within 48 hours, some of our items are built to order or require custom pieces that could take 2-6 weeks to prepare before shipping! Please contact us at 888-884-2234 for a delivery ETA if you have a strict timeline.
Thanks!
Omaha Sports & Games Team
Returns & Refunds Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at service@omahasportsandgames.com.
If your return request is accepted, it will be up to you as the buyer to return the item in its original packaging, unworn and unused. You as the buyer will be responsible for paying the return shipping. We may be able to assist you in scheduling a pickup for return but the payment will still be your responsibility. You can always contact us for any return question at service@omahasportsandgames.com.
All products are subject to a minimum 15% restocking fee based on the quality of the returned product and packaging.
Items opened, tested, used, or any other non-new condition may be eligible for return based on the manufacturer's return policy.
Shipping Damages and Issues
You must inspect your order upon reception and refuse delivery if you see damage. DO NOT sign for delivery if there is apparent damage to the product. If you sign for the delivery and later claim shipping damage, there is very little we can do to help.
If your order does not require signing at delivery and is instead just dropped off at doorstep with damage, contact us immediately with photos of the damaged boxes.
If your item(s) is defective, damaged or if you receive the wrong item, contact us immediately so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, such as custom products, special orders or personalized items. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items, gift cards, or multiple product bundle discounts.
| Specification name | Specification Value |
|---|---|
| Age group | Adults |
| Smart watch features | Touchscreen, GPS support, Fitness tracker, Heart rate monitor, Waterproof |
| Target gender | Unisex |
| Watch display | Digital |
| Watch features | Waterproof |