Product R8 Color Black, Gold Weight 23g Dimensions ?41*12mm Mechanical Screen Size 1.09" 240*240 pixel Screen Type TFT-LCD Screen Cover 2.5D-curved Asahi Glass Bottom Material Zinc alloy frame, Plastic bottom shell, stainless buttons Strap Material TPU strap + metal buckle Hardware CPU Realtek8762CK_VD G-sensor Support Blood Oxygen Monitoring Support Heart Rate Monitoring Support Motor Support GPS No Mic No Speeker No Screen 1.09" TFT-LCD Screen Resolution 240*240 Flash 384KB+ 64MB Expansion RAM 160KB Bluetooth 5.0 Power Standby time with Bluetooth connected >45 Days Typical daily use 7-10 days Battery type Lithium polymer battery Battery capacity 190mAh Charging method Magnetic charging Charging time ? 2.5 hours Function 23 Languages Support Chinese, English, Korean, Japanese, German, Russian, French, Italian, Spanish, Portuguese, Polish & Czech Reminder call reminder, text message reminder, sedentary reminder, alarm clock reminder Dial 4 Customized Dials Pedometer exercise step count, calorie consumption calculation, exercise mileage record; Sleep monitoring sleep quality monitoring Heart rate All-day heart rate monitoring: 24-hour uninterrupted high-precision heart rate detection Blood Oxygen Level All-day Blood Oxygen monitoring 25 Workout Modes Indoor running, Dance, Cycling, Rowing, Gymnastics, Sport walking, Spinning bike, Situps, Yoga, Rugby, Hockey, Volleyball, Tennis, Baseball, Cricket, Football, Basketball, Mountaineering, Free-style exercise, Badminton, Table Tennis, Rope Skipping, Swimming, Outdoor running, Jumping Jack 0ther functions stopwatch; countdown; music control; raise the hand to brighten the screen; GloryFit APP download QR code; Notification reminder (IOS \ Android) Twitter, Facebook, Linkedin, whatsApp, Line, lnstagram, snapchat, skype, Gmail and other timely information; SMS push, incoming call push; Time setting synchronization;