Designed for Adventure Designed for adventures with extremely durability and route navigation/checkpoint features. Battery Life 45 days of regular battery life and 60 hours in full GPS mode. Rugged Design Built with a Grade 5 titanium alloy bezel and touchscreen-enabled diamond-like coating sapphire glass and weighs just 54 grams. Activity Tracking Pulse Oximeter with 24/7 blood oxygen monitoring at high altitudes, 24/7 heart rate monitoring with sleep, step and calorie tracking. Temperature The watch works under extreme low temperature down to -4°F/-20°C with less than 30% depreciation in battery performance. Sensors The watch also features a barometric altimeter, accelerometer, compass, gyroscope, thermometer. Night Mode Night mode – an always-on mode that uses just enough backlight for night-time activities. Digital Dial Enhanced Digital Dial for easy operation even with thick climbing glove. COROS.com Interval, structured, triathlon, multisport and strength training modes with training programs and plans created by COROS athletes and coaches available free on COROS.com. Stryd Power Built-in running power metrics from the wrist plus native and complete integration with Stryd power meters. Customisable Workouts With over 200 preloaded strength exercises, COROS Training Mode and COROS App allow you to build customised workouts for running, cycling, swimming and strength training. Multisport Featuring running, cycling, swimming, cardio, strength, winter and water sports modes with ongoing support and updates. Connectivity GPS/GLONASS/BEIDOU satellite connections and ANT+/Bluetooth for accessories, Bluetooth for smartphone only. Customisable Screens Fully customisable data screen supports up to 6 different metrics per screen. Water Resistance 15ATM (150 meters/ 492 feet) water resistance. Specifications Display Size: 240 x 240 Display Type: Memory LCD Screen Material: Sapphire Glass with Diamond-Like Coating Bezel Material: Titanium Cover Material: Titanium Strap Material: Silicone Physical Size: 47mm x 47mm x 15.6mm Weight: 76g Phone Connection: Bluetooth Accessory Connection: ANT+/Bluetooth Navigation: GPS, GLONASS, Beidou Sensors: Optical Pulse Oximeter, Optical Heart Rate Monitor, Barometric Altimeter, Accelerometer, Compass, Gyroscope, Thermometer Water Resistance: 15ATM (150 meters/ 492 feet) Working Temperature: -20°C to 60°C Storage Temperature: -30°C to 70°C Charging Time: Less than 2 hours Battery Life: 45 days (Regular Use), 60 hours (Full GPS mode), 150 hours (UltraMax mode) Supported Workouts: Run, Indoor Run, Trail Run, Track Run, Hike, Bike, Indoor Bike, Pool Swim, Open Water, Triathlon, Gym Cardio, GPS Cardio, Ski, Snowboard, XC Ski, Ski Touring, Multisport, Strength, Training