Usage:Personal Name:Gps Key Keychain Bluetooth Tracker Operating System:iOS7.0+, Android4.3+ Certificate:CE, FCC, RoHS Technic Support:Instruction, SDK, App Sound:90db Battery:Battery CR2032 Life time:6months Chip:BLE nrf51822 chip Distance:30meters Bluetooth:Bluetooth 4.0 4.1 4.2