Compatible system: Android5.1 (included) or above, IOS8.0 included) FLASH memory: 16Mbit Type: TFT Screen size: 0.96 inches Pixel: 80RGB*160 Touch type: single touch   Connection parameters: Bluetooth: Bluetooth 4.0 WIFI: Not supported NFC: Not supported   sensor: Gravity sensor: support Gyro: Not supported Heart rate: Tianyi core GPS: not supported   battery: Battery type: lithium polymer Capacity: 90mAh Charging method: USB   APP software features: JYOU: 1. Step, sleep, real-time heart rate, smart alarm clock, shake a photo           2. Personal information, raise your hand, bright screen, sedentary reminder           3. Call Push, SMS Push, QQ Push, WeChat Push, Add More Push           4. Support 10 languages: Chinese, English, Traditional, Japanese, Korean, French, German, Russian, Polish, Spanish   Other parameters: Waterproof rating: IP67 Charging time: about 2H Life time: 7 days of use, 15 days of standby Product language: Chinese and English language Wrist strap size: total length 210MM, adjustable length 120-200MM Appearance Material: Main body: Plastic Wristband: Thermoplastic elastomer + stainless steel