Chip: RTL8763EWE Compatible systems: Android 4.4, iOS 9.0 and above versions RAM 160KB external storage FLASH 128Mb Size: 1.85 inches Pixel: 360 * 360 Touch type: Full screen touch Touch screen material: Tempered glass Call: Supported Music function: support Sports function: support Blood oxygen: support Speaker: Super large magnetic 0916 waterproof speaker Mike: Strong anti 4015 waterproof microphone BT Bluetooth: 5.0 BLE Transmission range: approximately 10M Gravity sensor: Shilan Micro SC7A20 Heart rate: Tianyi Hexin 3605 high-precision heart rate module Motor: Flat 0820 motor Battery type: Polymer pouch Capacity: 710Mah Charging method: magnetic suction Button: 3 buttons (including 1 encoder button) LED indicator light: Yes Waterproof grade: IP67 Air upgrade: OTA Band language: Simplified Chinese, English, French, Spanish, Japanese, Russian, Portuguese Mobile app languages: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italy, Portugal