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Home Smartwatches Descent™ Mk3i – 51 mm
cf xl 9813
Approach® S44 $93.00 – $105.00Price range: $93.00 through $105.00
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cf xl 9865
Descent™ G2 $699.99 Original price was: $699.99.$210.00Current price is: $210.00.

Descent™ Mk3i – 51 mm

$480.00 – $501.00Price range: $480.00 through $501.00

Descent Mk3i – 51mm is a watch-style dive computer with a bright AMOLED display, air integration, color maps and a built-in LED flashlight.

  • 43 mm
  • 51 mm
  • Descent Mk3
  • Descent Mk3i
  • Descent Mk3i & T2 Transceiver
  • 010-02752-10
  • 010-02752-13
  • BNDL-DMK3-51CGDT2
  • 010-02753-13
  • 010-02753-10
  • BNDL-DMK3-43TFDT2
  • 010-02753-03
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  • Description
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Description
Select ContinentAfricaAsiaAustralia OceaniaEuropeMiddle EastNorth AmericaSouth AmericaAll
Select ActivityOn the RoadOn the WaterOn the TrailOn the GreenAll

Need a map update?

Update the maps that came with your device for the best navigation experience.

Check for Updates

What You’ll Love

Sleep score and insights
Battery life (smartwatch mode) Up to 10 days (4 days always-on)
Built-in mapping
Pulse Ox blood oxygen
Pay™
Multi-band GPS
Music storage
Training readiness
Training status yes (improved)
Display type AMOLED
Touchscreen
Water rating Dive (200 meters)

General

Strap material

silicone

Lens Material

sapphire crystal

Bezel Material

stainless steel

Case material fiber-reinforced polymer with stainless steel rear cover
QuickFit® watch band compatible

yes (20 mm)

Physical size

43 x 43 x 14.15 mm

Fits wrists with the following circumference:
Silicone band: 128-224 mm
Extra long silicone band: 128-360 mm

Weight

no band: 53.5 g
silicone band: 72.5 g

Leakproof inductive buttons
Display Size 1.2” (30.4 mm) diameter
Display resolution 390 x 390 pixels
Color display
Large font option
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

Charging method proprietary clip charger
Memory/History 32 GB

Clock Features

Time/date
GPS Time Sync
Automatic daylight saving time
Alarm clock
Timer
Stopwatch
Sunrise/sunset times

Health & Wellness Monitoring

Wrist-based heart rate (constant, every second)
Resting heart rate
Abnormal heart rate alerts yes (high and low)
Respiration rate
Fitness age yes (in app)
Body Battery™ energy monitor
All-day stress
Relaxation breathing timer
Breathwork
Sleep yes (advanced)
Nap detection 
Hydration yes (in Connect™)
Women’s health yes (in Connect™)
Skin temperature
Jet lag adviser

Sensors

GPS
GLONASS
Galileo
SatIQ™ Technology
Elevate™ wrist heart rate monitor
Pulse Ox Blood Oxygen Saturation Monitor
Barometric altimeter
Compass
Gyroscope
Accelerometer
Thermometer
Ambient light sensor
Depth sensor

Daily Smart Features

Connectivity Bluetooth®, ANT+®, Wi-Fi®, Subwave™
Connect IQ™ (downloadable watch faces, data fields and apps)
On-device Connect IQ™ Store
Smart Notifications
Text response/reject phone call with text (Android™ only)
View images from notifications on watch (Android™ only)
Morning report
Calendar
Weather forecasts
Realtime settings sync with Connect™ mobile
Battery saver (customizable low power watch)
Controls smartphone music
Plays and controls watch music
Find My Phone
Find My Watch
Find My Phone during GPS activity
Compatible with Messenger app
VIRB® Remote
Smart trainer control
Pairs with Connect™ Mobile
Smartphone compatibility iPhone®, Android™
Stocks
Red shift mode
Share

Workout and Training Plans

Daily Suggested Workout – Running (Pace and Heart Rate Based)
Daily Suggested Workout – Cycling (Pace and Heart Rate Based)
Running Coach
Running Coach Experts
Cycling Coach
Coach – Prebuilt Cycling Plans
Cardio workouts
Strength workouts
HIIT workouts
Yoga workouts
Pilates workouts
On-screen workout animations
On-screen workout muscle maps

Activity Profiles

Gym Strength, HIIT, Cardio, Elliptical Training, Stair Stepping, Floor Climbing, Indoor Rowing
Multisport Swimming/Running, Triathlon
Wellness

Walking, Pilates, Yoga, Indoor Walking

Indoor running Treadmill Running, Indoor Track Running, Virtual Running
Outdoor running

Running, Outdoor Track Running, Trail Running, Ultra Running, Obstacle Racing

Outdoor recreation

Hiking, Indoor Climbing, Bouldering, Climbing, Hunting, Horseback Riding, Golfing, Disc Golf, Archery

Cycling

Biking, Road Biking, Mountain Biking, Gravel Biking, Bike Commuting, Bike Touring, eBiking, eMountain Biking, Indoor Biking, Cyclocross, BMX

Swim

Pool Swimming, Open Water Swimming

On the Water

Stand Up Paddleboarding, Rowing, Kayaking, Surfing, Kiteboarding, Windsurfing, Fishing, Boating, Sailing, Sail Racing, Water Skiing, Wakeboarding, Wakesurfing, Tubing, Snorkeling, Sailing Expedition, Whitewater

Motor sports Motorcycling, Overlanding, Motocrossing, ATVing, Snowmobiling
Racket sports Tennis, Pickleball, Badminton, Squash, Table Tennis, Padel, Platform Tennis, Racquetball
Snow & winter Skiing, Snowboarding, Backcountry Snowboarding, XC Classic Skiing, Backcountry Skiing, Ice Skating, Snowshoeing
Team sports Basketball, Volleyball, Field Hockey, Ice Hockey, Football/Soccer, American Football, Lacrosse, Rugby, Ultimate Disc, Cricket, Softball, Baseball
In the ring Boxing, Mixed Martial Arts
Other activity profiles

Jumpmaster, Tactical, Inline Skating

Safety and Tracking Features

Incident Detection during select activities
Incident detection alert on phone for wearables
Assistance
Live Event Sharing

Tactical Features

Ballistics solver yes (unlock required)
Dual grid coordinates
Kill switch
Night vision mode
Stealth Mode
XERO™ Locations

Gaming Features

Gaming Activity
GameOn™ app compatible

Diving Features

Dive activity maximum operating depth 200 meters
Single-gas mode
Multi-gas mode
Gauge mode
APNEA mode
APNEA hunt mode
Pool APNEA
Decompression model Bühlmann ZHL-16c with gradient factors
Nitrox support
Trimix support
Closed Circuit Rebreather (CCR)
Gas mixes

Air, Nitrox and Trimix, up to 100% O2; 1 bottom gas and up to 11 deco and/or backup gasses.

PO2 Up to 2.0 with customizable deco PO2 setting
Auto start/end dive
Custom end-dive timeout yes (20s to 10 m)
Safety Stop yes (customizable off/3min/5min)
Deep Stops yes (using custom gradient factors)
Customizable conservatism yes (low/medium/high or custom using gradient factors)
Dive ascent/descent rate indicator
Automatic altitude adjustment
No fly time
Dive planner yes (basic NDL + multi-gas deco planner)
Tides
Backlight yes (configurable time and intensity; auto-on at depth)
Automatically saves dive entry and exit locations
Sync dive log to Dive™ Mobile app
Custom dive data screens
Alerts & alarms Audible and vibration alarms for ascent rate, PO2, CNS/OTU, NDL, deco, gas switching, tank pressure, gas consumption rate. Customizable (up to 40) audible and/or vibration per dive mode, based on depth or time
3-axis dive compass yes (with adjustable heading, quick change to 90R, 90L and reciprocal). Indicates degrees and direction back to set heading
Missed Deco Lockout yes (can be disabled prior to dive with user acknowledgement)
Residual Tissue Loading Reset yes (on the surface with user acknowledgement)
Surface diver status widget yes (surface interval, N2/HE loading, CNS, OTU and tissue compartment status)

Boating Features

Available Boating Profiles Boating, Sailing, Sail Racing
Anchor Alarm
Autopilot Control
Boat Data Streaming CIQ
Virtual starting line
Countdown timer
Tack assist mode
Built-in barometer and tide tables yes (downloadable tides)
Wearable trolling motor remote

Activity Tracking Features

Step counter
Move alerts (displays on device after a period of inactivity)
Auto goal (learns your activity level and assigns a daily step goal)
Calories burned
Floors climbed
Distance traveled
Intensity minutes
TrueUp™
Move IQ™
Connect™ Challenges app yes (optional Connect IQ app)
Automatic rep counting

Training, Planning and Analysis Features

Customizable data pages
Downloadable training plans
Course guidance
HR zones
HR alerts
HR calories
% HR max
% HRR
Recovery time
Auto max HR
Race glance/widget
HRV status
HRV stress test (measures your heart rate variability while standing still, for 3 minutes, to provide you with an estimated stress level; the scale of this is 1 to 100; low scores indicate lower stress levels) yes (with compatible accessory)
HR broadcast (broadcasts HR data over ANT+® to paired devices)
Respiration rate (during exercise) yes (with compatible accessory)
GPS speed and distance
Customizable activity profiles
Auto Pause® automatic timer halt
Interval training
Improved interval (includes open repeats, intervals data page, rest screen and auto detection)
Advanced workouts
Power Modes – customizable in-activity battery settings
HRM running pace and distance
Auto Lap® interval tracking feature
Manual lap
Rest timer
Configurable lap alerts
Heat and altitude acclimation
VO2 Max (Run)
VO2 Max (Trail Run)
Realtime stamina
Endurance score
Load ratio
Training load
Training load focus
Training effect
Training effect (anaerobic)
Primary benefit (Training Effect labels)
Improved recovery time
Custom alerts
Voice alerts
Finish time
Virtual Partner
Race an Activity
Manual multisport activities
Live Segments
Strava Live Segments
Round-trip course creator (running/cycling)
Trendline™ Popularity Routing
Touch and/or button lock
Shortcuts
Auto scroll
Activity history on watch
Physio TrueUp
Unified training status

Running Features

GPS-based distance, time and pace
Running dynamics
Vertical oscillation and ratio
Ground contact time and balance
Stride length (real time)
Cadence (provides real-time number of steps per minute)
Running power
Grade-adjusted pace
Performance condition
Lactate threshold yes (with compatible accessory)
PacePro™ Pacing Strategies
Run workouts
Hill score
Trail run auto climb
Race predictor
Course- and weather-specific race predictor
Foot pod capable
Run/Walk/Stand detection

Golfing Features

Preloaded with 43,000 courses worldwide
Yardage to F/M/B (distance to front, middle and back of green)
Yardage to layups/doglegs
Measures shot distance (calculates exact yardage for shots from anywhere on course) automatic
Digital scorecard
Custom targets
Stat tracking (strokes, putts per round, greens and fairways hit)
AutoShot™
Full vector map
Auto CourseView updates
Green View with manual pin position
Hazards and course targets
PinPointer
PlaysLike distance
Touch-targeting (touch target on display to see the distance to any point)
Handicap scoring
Tempo Training
Round timer/odometer
CT10 Automatic club tracking compatible (requires accessory)
Wind speed and direction (requires connection to Golf app)
Virtual caddie
Pairs with Golf app
Tournament legal
Green Contours (with Golf membership)

Outdoor Recreation

Point-to-point navigation
Bread crumb trail in real time
Back to start
TracBack®
UltraTrac mode
Explore Nearby
Reference point
Up Ahead
NextFork™ navigation
Elevation profile
Distance to destination
Barometric trend indicator with Storm Alert
ClimbPro™ Ascent Planner
Vertical speed
Total ascent/descent
Rest Timer (Ultra Run only)
Auto rest
Future elevation plot
Preloaded road and trail maps
Preloaded ski resort maps
Downloadable cartography support
GPS coordinates
Sight ‘N Go
Area calculation yes (via Connect IQ™)
Fish forecast
Projected waypoint
Sun and moon information
Expedition GPS Activity
Tides
Tide glance

Cycling Features

Courses
Bike lap and lap maximum power (with power sensor)
Race an activity
Alerts (triggers alarm when you reach goals including time, distance, heart rate or calories)
FTP (Functional Threshold Power) yes (with compatible accessory)
Power curve and % FTP workouts
Cycle Map (routable cycling-specific street map)
MTB Grit & Flow
Advanced cycling dynamics
Compatible with Vector™ and Rally™ (power meters)
Compatible with Varia Vision™ (head-mounted display)
Compatible with Varia™ radar (rear-facing radar)
Compatible with Varia™ lights
Compatible with Varia headlight camera
Speed and cadence sensor support (w/sensor)
Power meter compatible
Power guide

Swimming Features

Open-water swim metrics (distance, pace, stroke count/rate, stroke distance, swim efficiency (SWOLF), calories)
Pool swim metrics (lengths, distance, pace, stroke count, swim efficiency (SWOLF), calories)
Stroke type detection (freestyle, backstroke, breaststroke, butterfly) (pool swim only)
Drill logging (pool swim only)
Basic rest timer (up from 0) (pool swim only)
“Repeat on” rest timer (pool swim only)
Auto rest (pool swim only)
Time and distance alerts
Pacing alerts (pool swim only)
Countdown start (pool swim only)
Pool swim workouts
Critical swim speed
Underwater wrist-based heart rate
Heart rate from external HRM (real-time during rests, interval and session stats during rests, and automatic heart rate download post-swim) yes (with HRM-Tri, HRM-Swim, HRM-Pro or HRM-Pro Plus)

Kid Activity Tracking Features

Toe-to-Toe™ Challenges app yes (optional Connect IQ Toe-to-Toe™ Challenges app)
Additional information
Case Size

43 mm, 51 mm

Version

Descent Mk3, Descent Mk3i, Descent Mk3i & T2 Transceiver

Model/Color

010-02752-10, 010-02752-13, BNDL-DMK3-51CGDT2, 010-02753-13, 010-02753-10, BNDL-DMK3-43TFDT2, 010-02753-03

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