OEM manufacturer supply bluetooth car kit
1. Support Multiple paired. (2 bluetooth Phones can be paired meanwhile)
2. Integrated with echo cancellation and noise suppressor
3. One-touch answer, call rejection, last number redial
4. Advanced built-in louder speaker and microphone
5. Built-in FM transmitter send the call or music to the car stereo
6. Battery type: 3 pieces of replaceable AAA dry battery
7. Talk time up to 18 hours, depends on the battery
8. Standby time up to 1080 hours

Parameters
Bluetooth operation range; 0-10 m
Bluetooth operation frequency: 2.40 GHz~2.48GHz
Operation temperature: -20~+70 degree.