Note: 1. Compatible operating systems: Android 5.0 or higher, iOS 9.0 or higher. Please do not purchase if your device has a version lower than these. 2. Once the smartwatch and phone are connected, they will automatically sync, and the watch will adopt the language of the phone without the need for any manual configuration. 3. The Intelligent wristband needs to be used in conjunction with a mobile phone and cannot be used independently with a SIM card. Body Material: PC+ABS Band Material: TPU Body Dimensions: 382112mm Weight: 21.9g Screen Size: 0.96 TFT Screen Resolution: 80(R.G.B)160 Battery Capacity: 90mAh Working Time: 12 days Standby Time: 30 days Available Colors: Black, Blue, Pink, Purple BT Chipset: TLSR8251F512ET32/55mmQFN32 G-sensor_IC: SC7A20/2*2/LGA12 Temperature Sensor: Thermistor Sensor Heart Rate IC: LC10A BT Version: BLE 5.0 BT Range: 8-10m Memory (Ram+Rom+Flash): 512KB+64KB+32Mb Data Storage: 7 days Water Resistance: IP68 Charging Type: USB Charging