TW64 intelligent bluetooth wristband pedometer anti-lost bracelet

Type: TW64 Color: Light Gray Waterproof Standard: IP67 Outside mateial: TPU environmental-protection material / Silicone Length:19-24cm Width:2.2cm CPU chip: TI CC2541F256RHAR Bluetooth version: 4.0BLE(Low Power) Memory: 64KB RAM and 64KB ROM Battery:401020 PCB Size: 34.6x14.5x0.8 Display: lcd/0.49inch OLED(Resolution 64x32) Power consumption: normally can use one week, 15 days Standby Supported models: iPhone 4S / 5 / 5C / 5S / 6 / 6P IOS6 or higher versions, Android 4.3 or higher versions.