Size - 46 x 46 x 14.15 mm Weight - With nylon band: 37 g- With silicone band: 49 g Screen size 1.3 inches Resolution 416 x 416 pixels Screen type AMOLED Touch Screen Processor - Performance 2x better performance than PACE 3 Material - Screen cover Reinforced Mineral Glass- Bezel and Casing High strength polymer- Band Material Nylon/Silicone Watch Band - Width 22mm Wrist Circumference- Nylon: 140mm - 210mmSilicone: 130mm - 215mm Band Install - Quick release Usability Buttons - Digital Dial and Back Button Size - 26% larger back button than PACE 3 Connectivity Data sync - Bluetooth 3x Faster WiFi Bluetooth headphones - Supports Bluetooth Music 32GB storage Bluetooth accessories - Connects to heart rate monitors, power meters, foot pods, and other accessories via standard BLE protocol Durability Waterproof 5 ATM Working temperature -20℃ ~ 50°C Battery Life All Systems 38 Hours Dual-frequency 32 Hours Battery capacity 345 mAh Daily battery life - Without Always-On Display Mode: 20 days - With Always-On Display Mode: 6 days Estimated charging time 15 ℃~ 45 ℃ about 1.5 hours Satellite Systems Satellite Systems GPS, GLONASS, GALILEO, Beidou, QZSS Dual Frequency L1 + L5 dual-frequency positioning Navigation Map Type Offline Global Mapping Other features - Back-to-Start - Checkpoints - Turn-by-Turn - Save Locations Sensors- Optical Heart Rate Sensor- Barometric Altimeter- Accelerometer- Gyroscope- Electronic compass- Pulse Oximeter (SpO2)- ECG Training Features- EvoLab- Running Fitness Test- Recommended Training Load- Recovery Timer- Effort Pace- Resting Heart Rate Test- Metronome- Broadcast Heart Rate- Workouts- Training Plans Daily Data- Steps, calories, exercise time- Message and Call Notifications- Sleep Recording- Alarm- Timer- Stopwatch- Find my Phone/Watch- Night Mode- Altitude Performance- Daily Stress