PERFORMANCE METRICS
View advanced training metrics that include running dynamics, heat- and altitude-adjusted VO2 max, recovery advisor and more.
PACEPRO™ TECHNOLOGY
A first-of-its-kind feature that helps keep you on pace with grade-adjusted guidance as you run a course.
SPORTS APPS
Use preloaded activity profiles for trail and track running, swimming, running, biking, hiking, rowing, skiing, golfing, surfing, indoor climbing and more.
SURF-READY FEATURES
Get ready to catch some waves. Descent Mk2i works with Surfline Sessions™, which creates a video of every wave you ride in front of a Surfline camera, so you can watch them later and see how you did.
MTB DYNAMICS
Track the details of every ride with mountain biking metrics plus specialized Grit™ and Flow™ measurements that rate trail difficulty and how smoothly you descend, giving you a score to beat next time.
ANIMATED WORKOUTS
Easily follow animated workouts for cardio, strength, yoga and Pilates. View workouts right on your watch screen.
TOPO AND SKI MAPS
Use topographical maps to navigate your adventures and view run names and difficulty ratings for 2,000 worldwide ski resorts.
ABC SURFACE SENSORS
Navigate your next trail with ABC sensors, including an altimeter for elevation data, barometer to monitor weather and 3-axis compass.
TACTICAL CAPABILITY
Get tactical features such as Jumpmaster mode and dual-format GPS to help you navigate and provide unparalleled situational awareness. Keep it covert with stealth mode and a kill switch.
WRIST-BASED HEART RATE
Optical heart rate5 technology gauges activity intensity as well as heart rate variability to calculate your stress level. It also tracks underwater without a heart rate strap.
PULSE OX SENSOR
For altitude acclimation, sleep monitoring or between Apnea/Apnea Hunt activities on the surface, a Pulse Ox4 sensor uses light beams at your wrist to gauge how well your body is absorbing oxygen.
ALL DAY RESPIRATION
Track how you’re breathing throughout the day, during sleep and during breathwork and activities such as yoga.
ADVANCED SLEEP MONITORING
Get a full breakdown of your light, deep and REM sleep stages as well as Pulse Ox and respiration data. View it all on a dedicated widget that includes your sleep score and other insights.
RECOVERY TIME
After each workout, recovery time lets you know when you’ll be ready for another hard workout. It even accounts for training intensity and factors such as stress, daily activity and sleep.
DAILY WORKOUT SUGGESTIONS
For training guidance that takes you and your fitness level into account, get daily run and ride recommendations based on your current training load and training status.
TURN-BY-TURN NAVIGATION
Follow a route or course with help from turn-by-turn directions, which let you know ahead of time when the next turn is coming.
ROUND-TRIP ROUTING
Enter a distance you want to travel, and get suggested routes that will bring you back to your starting point. Trendline™ popularity routing helps you find the best local paths.