Garmin Descent Mk3i 51mm Dive Features
The Garmin Descent Mk3i Dive Computer 51mm is an essential tool for any diver's safety. It features a comprehensive dive log, long battery life of up to 66 hours in dive mode, customizable dive modes with screens of your choosing, and a lume mode with a green luminescence for easy visibility in low-light conditions. The built-in LED flashlight has variable light intensities and strobe modes making sure you stay seen in any environment.
The Garmin Descent Mk3i Dive Computer 51mm is a specialized dive computer with ABC sensors, surface GPS, a Garmin Dive App, a Reference Point, and a Variometer, providing you with essential navigation tools for a successful dive. Make every part of your journey precise and safe with this dive features packed dive computer.
The Garmin Descent Mk3i Dive Computer 51mm keeps divers informed and safe with the addition of Big Numbers Mode for simplified and larger text data display, Tide Data for ocean conditions, as well as compatibility with an inReach Device for satellite messaging. Enjoy dependable and precise dive information with this advanced dive computer.
Garmin Descent Mk3i Health and Fitness Functions
Monitor your outdoor activities with the Garmin Descent Mk3i Dive Computer 51mm. With preloaded sports activities such as trail running, swimming, biking, and skiing, plus surfing and backcountry snowboarding metrics, keep track of max speed, distance traveled, ascent and descent data, and more. Plus, use the VO2 max to evaluate your current fitness level and set goals.
The Garmin Descent Mk3i Dive Computer 51mm helps you manage your workouts with its daily suggested workouts, animated workouts, wrist-based heart rate monitoring, and Pulse Ox Sensor for blood oxygen saturation. Get clarity on your fitness levels with helpful insights from this dive computer.
The Garmin Descent Mk3i Dive Computer 51mm provides precise metrics to help you evaluate and optimize your training, and features Jet Lag Adviser for better sleep, fitness, and energy levels. It measures your VO2 max, training loads, and other factors to provide an Endurance Score and Hill Score. It also includes Garmin Coach for tailored training plans, plus sleep monitoring and sleep score for improved sleep quality.
Garmin Mk3i 51mm Navigation and Orientation Functions
The Garmin Descent Mk3i Dive Computer 51mm offers superior positioning accuracy, with multi-band GPS and SATIQ™ TECHNOLOGY. It also features SKIVIEW™ MAPS, ABC SENSORS, PACEPRO™ TECHNOLOGY and Courses with Turn-by-Turn Directions for the best navigation. Create or find existing courses on Garmin Connect™ and get turn-by-turn directions with ease. Maximise your adventure with the ultimate precision.
Garmin Lifestyle Functions
Experience a new level of underwater safety and convenience with the Garmin Descent Mk3i Dive Computer 51mm. This feature-rich device offers Tracking and Safety features, along with Music, Garmin Pay, Smart Notifications, and Connect IQ Store. Stay connected with notifications on your watch when paired with your compatible smartphone, and pay contactless with participating providers. Safety assurance comes from a live location message sent when the device senses an incident. Download and enjoy your favorite songs with you on the go. Add amazing watch faces and apps to your watch with Connect IQ.
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 - fibre-reinforced polymer with titanium rear cover
- QUICKFIT™ WATCH BAND compatible (20 mm)
- Strap material silicone
- Physical size: 51 x 51 x 16.4 mm
- Fits wrists with the following circumference: Silicone band: 135-230 mm, Extra long silicone band: 135-355 mm, Titanium bracelet: 135-220 mm
- Weight - no band: 77.8 g, silicone band: 105.6 g
- Display size: 1.4” (35.56 mm) diameter
- Display resolution: 454 x 454 pixels
- Color display
- Charging method: Garmin proprietary clip charger
Battery life
- Smartwatch: Up to 25 days (10 days always-on)
- Battery Saver Watch Mode: Up to 31 days
- GPS Only: Up to 76 hours (56 hours always-on )
- All Satellite Systems: Up to 55 hours (43 hours always-on)
- All Satellite Systems + Multi-band: Up to 48 hours (38 hours always-on)
- All Satellite Systems + Music: Up to 17 hours
- Max Battery GPS: Up to 118 hours
- Expedition GPS: Up to 24 days
- Dive Mode: Up to 66 hours
- Dive Mode with Air Integration: Up to 40 hours
- 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
We offer free tracked UK standard delivery on orders over £50 (Excluding Weights and Cylinders, as they must go on a separate service to your order)
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. More Details
60 Day Stress Free Returns
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. More Details
Returning To Chiswick Store
We want to make your shopping experience as seamless and enjoyable as possible, even when it comes to returns. That’s why we offer hassle-free returns at our Chiswick store. But there’s more—when you visit to make a return, you can also pre-order items to be available for collection. This means we’ll have a range of sizes ready for you to try on, ensuring you find the perfect fit before leaving the store.
Shop with Confidence, Wherever You Are
To make things even easier, we offer complimentary video consultations with our expert team. Whether it’s before or after your purchase, our specialists can guide you through sizing, fit, and styling—all from the comfort of your home. It’s like having your own personal VIP shopping experience, tailored just for you.
From returns to reorders, we’re here to help you find exactly what you need with zero stress.
Book Video Consultation: Book Now
We offer the option for customers to choose ‘Pickup in store’ as a shipment method, allowing your order to be picked up from our Chiswick store at a time and date that works for you (within our business hours). The process is really easy, but we'll run through it here:
Step 1 - Add products to your cart:
Browse our vast selection of diving and snorkelling equipment, adding the kit you want to your cart.
Step 2 - Head to your cart:
Click on the cart icon to see a summary of the items you are about to purchase.
Step 3 – Review Your Order and Proceed to Checkout:
Once you're satisfied with the items in your cart, you can add a note to your order under the "Order Summary" section if desired. When you're ready to proceed, simply click "Checkout" to complete your order.
Step 4 - Customer Information:
If you have a Mike's Dive Store account, simply log in to autofill your details. If not, enter your email address, select ‘Pickup in Store,’ and then click ‘Continue to Payment’ to proceed.
Step 5 – Payment & Billing Details:
Select your preferred payment method and enter your payment information. Below, provide your billing details. If you're logged into your account, please double-check that your billing and contact information are up to date.
Step 6 – Review Order:
After entering your payment details, click ‘Review Order’ to proceed with placing your order. You will receive an email confirmation with your unique order number. We will notify you when your order is ready for collection, usually within 4 hours or sooner during our opening hours (Monday to Saturday, 10 AM to 6 PM). Please note that our hours may vary during the Christmas and New Year periods.
Our London Store Information:
Address:
Mike's Dive Store, 113 Power Rd, Chiswick, West London, W4 5PY
Telephone:
Local: 01202 037162
International: 0044 1202 037162
Email:
All Enquiries - support@mikesdivestore.com
Store Opening Times:
Mon - Fri: 10am - 6pm
Sat: 10am - 5pm
Sun: Closed
Need Help?
Our expert diving team is here to assist with your order, sizing, or product selection. We're divers ourselves, ready to support you!
Chat Hours:
Monday - Friday: 09:00 AM - 05:50 PM GMT
Prefer a call back? Just request it through the chat bubble!
Store Location
Mike's Dive Store
113 Power Rd, Chiswick, West London, W4 5PY
Store Hours
Mon - Fri: 10 AM - 6 PM
Sat: 10 AM - 5 PM
Sun: Closed
Bank Holidays: Store & Warehouse Closed (no dispatch)
Online Video Consultations
Unable to visit us? Book a live video consultation for tailored advice on equipment, fitting, or specialized gear. Get expert guidance from our team, face-to-face. Book Now
For more answers, visit our FAQs.
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