ModelBT8109BImage/SizeFeatures1. Fixed on the steering wheel with special hook structure which is convenient for fixing and operation.2. DSP technology,Website:http://www.giftssuppliers.com, Full duplex, CVC noise and echo suppression.3. Support TTS function and MIC mute function4. Answer/end/reject a call, last call redialing, and call switch5. Support A2DP function, can play cell phone music and control it completely via Bluetooth car kit.6. Built-in high intelligent microphone and powerful speaker in order keep excellent sound quality effects7. USB port for software update and charge8. Connect automatically when power is on 9. Support dual standbyParameter1. Bluetooth version:2.12. Bluetooth working Frequency: 2.4GHZ3. Receiving range of the Bluetooth device: 0~10 meters4. Talking range of the hands-free Mic: 0~1 meters5. Charging voltage: 5V6. Capacity of the built-in lithium: 300mAH7. Operating temperature: -10~70 degrees8. Storage temperature: -20~80 degrees9. Built-in Li-ion BatteryPackageColor box : 19.6*10.6*4.6cmCTN:48.5*33.3*41.2cm60pcs/CTN