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Garmin Descent Mk3i Dive Computer 43mm

Garmin Descent Mk3i Dive Computer 43mm


Regular price £1,199.99
Regular price £1,249.99 Sale price £1,199.99
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  • Discover a deeper connection with the Descent™ Mk3i watch-style dive computer
    Purpose-built specifically for divers, the series combines a bright 1.2" AMOLED display with a scratch-resistant sapphire lens, a 200-metre dive-rated case and leakproof inductive buttons. All watches come with multiple dive modes for recreational to technical scuba diving and freediving, they feature an all-new dive readiness tool, developed by Garmin, which shows how everyday factors such as sleep, exercise, stress, and jet lag can affect your body’s overall preparedness for diving — so, ultimately, you can make better-informed decisions when planning your diving.

    Garmin Descent Mk3i Dive Modes

    The Garmin Descent Mk3i Dive Computer 43mm provides the latest AIR INTEGRATION technology, allowing you to pair with Descent™ T2 transceivers (sold separately) for integrated pressure monitoring up to 8 tanks. SUBWAVE SONAR NETWORKING enables diver-to-diver messaging up to 30 meters and monitoring of up to 8 divers within a range of 10 meters (feature activated early 2024). The DIVE READINESS TOOL is a Garmin first technology, showing how lifestyle factors can affect your body and help you decide when you’re best prepared to dive. 

    The Garmin Descent Mk3i Dive Computer 43mm provides multiple dive modes (including nitrox and trimix) for single and multiple gas dives, as well as gauge, apnea, apnea hunt and closed-circuit rebreather. Its 1.2" AMOLED color display, sapphire lens, 200-metre dive-rated case and leakproof metal inductive buttons make it ideal for underwater exploration. Plus, Diveview Maps provide detailed bathymetric depth contours and more than 4,000 dive sites to help you discover new places.

    Garmin Mk3i Dive Computer

    Garmin Descent Mk3i Dive Computer Health and Fitness Functions

    Take your adventures to the next level with the Garmin Descent Mk3i Dive Computer 43mm. Whether you're trail running, skiing, rowing, or surfing, this computer has preloaded activity profiles to keep track of your data. Plus, use Surfline Sessions™ to create a video of every wave you ride and check the nearest surf spots with their widget. Monitor VO2 Max for fitness level, and get ascent and descent data with backcountry ski and snowboard. Unlock your full potential with the Garmin Descent Mk3i. 

    Garmin Descent Mk3i Dive Computer offers advanced metrics and guidance for high-performance swimming, running and riding. Track your heart rate, blood oxygen saturation, and get informed with light exposure, sleep schedule and jet lag advisories. Receive personalized, animated workouts tailored to your goals. Reap the rewards of improved endurance with the Endurance Score measurement. Track your VO2 max and training history and harness the power of GARMIN COACH for personalized dynamic training plans and expert coaching. Plus, keep an eye on your recovery with sleep score and women's health tracking. Be prepared for any physical challenge.

    Garmin Descent Mk3i Dive Computer

     Garmin Mk3i Navigation and Orientation Functions

    Garmin Descent Mk3i Dive Computer 43mm offers superior positioning accuracy with SATIQ™ TECHNOLOGY and optimised battery life. The preloaded Multicontinent Topo Maps and SkiView™ Maps provide accurate navigation and run names, difficulty ratings, plus an altimeter, barometer and 3-axis electronic compass. Take race-day strategy to the next level with PacePro™ Technology and turn-by-turn directions from courses in the Garmin Connect™ app. Discover hidden routes and explore farther than ever before with the Garmin Descent Mk3i Dive Computer 43mm. Its round-trip routing feature provides suggested paths to get you back safely and quickly, and TrendLine routing shows you the best local paths. Go deeper than ever with the advanced features of the Garmin Descent Mk3i Dive Computer.

     Garmin Descent Mk3i Dive Computer

    Garmin Descent Mk3i Lifestyle Functions

    The Garmin Descent Mk3i Dive Computer 43mm is designed with a range of safety and tracking features, including sending a shareable message with your location if an incident occurs. Connect with music streaming services, pay contact-free, and receive notifications directly on the watch. Personalize your experience with downloads from the Connect IQ™ Store.

    VIDEO CONSULTATIONS NOW AVAILABLE: We're bringing our highly experienced and knowledgeable staff to you with live-streaming consultations. If you need help choosing the right bit of kit or the best size before buying or even advice on whether a purchased item is the right fit for you then book yourself a consultation appointment.


    • Lens material - sapphire crystal
    • Bezel material - Diamond-like Carbon (DLC) coated titanium/ bronze PVD coated titanium
    • Case material - fiber-reinforced polymer with titanium rear cover
    • QUICKFIT™ WATCH BAND compatible (20 mm)
    • Strap material silicone
    • Physical size: 43 x 43 x 14.3 mm
    • Fits wrists with the following circumference: Silicone band: 128-224 mm, Extra long silicone band: 128-360 mm
    • Weight - no band: 49.3 g, silicone band: 68.3 g
    • Display size: 1.2” (30.4 mm) diameter
    • Display resolution: 390 x 390 pixels
    • Color display
    • Charging method: Garmin proprietary clip charger

    Battery life:

    • Smartwatch: Up to 10 days (4 days always-on)
    • Battery Saver Watch Mode: Up to 12 days
    • GPS Only: Up to 28 hours (22 hours always-on )
    • All Satellite Systems: Up to 20 hours (16 hours always-on)
    • All Satellite Systems + Multi-band: Up to 17 hours (14 hours always-on)
    • All Satellite Systems + Music: Up to 6 hours
    • Max Battery GPS: Up to 44 hours
    • Expedition GPS: Up to 10 days
    • Dive Mode: Up to 30 hours
    • Dive Mode with Air Integration: Up to 15 hours

      Inside the box:

      • Descent Mk3i – 43 mm, Carbon grey DLC titanium with black silicone band
      • Black extra-long adjustment strap
      • USB-C Clip Charging/ Data Cable
      • Documentation

        Read here to view our maintenance tips for dive computers.

        SKU: 010-02753-11
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      • Delivery Information

        We offer free tracked UK standard delivery on orders over £50. 

        Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.

        International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.

        Estimated delivery times are shown during checkout and reflect your chosen delivery method.

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        Returns Information

        If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!

        Mike's Dive Store offer an extended returns policy of 60 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!

        Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return.

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