Features of the COROS PACE 2 Premium GPS Sport Watch with Nylon Band Display Size: 1.2 in. 240 x 240 (64 colors) Display Type: Always-On Memory LCD Screen Material: Corning Glass Bezel Material: Fiber Reinforced Polymer Cover Material: Fiber Reinforced Polymer Strap Material: Nylon Quick Release/Fit Band: 20mm Physical Size: 42 ? 42 ? 11.7mm Weight With Nylon Band: 29g-30g Phone Connection: Bluetooth Accessory Connection: ANT+/Bluetooth Navigation: GPS/QZSS, GLONASS, BeiDou Sensors: Optical Heart Rate Monitor, Barometric Altimeter, Accelerometer, Compass, Gyroscope, Thermometer Water Resistance: 5ATM (50 Meters/164 Feet) Working Temperature: -4?F to 140?F (-20?C to 60?C) Storage Temperature: -4?F to 149?F (-20?C to 65?C) Charging Time: Less than 2 Hours Battery Life: 20 days of regular use, 30 hours in Full GPS mode, 60 hours in UltraMax mode Supported Workouts: Run, Indoor Run, Track Run, Bike, Indoor Bike, Pool Swim, Open Water, Triathlon, Gym Cardio, GPS Cardio, Multisport, Strength, Training, Flatwater, Rowing, Indoor Rower,Walk