V4.0 Wireless Hands Free Headset with Bluetooth Function Dual Usb Car Charger

V4.0 Wireless Handsfree Headset with bluetooth Function Dual USB Car Charger Features: 1. FM transmit frequency: 88.1 ~ 107.9MHZ 2. Use CSR4.0 main chip low-power bluetooth 3. bluetooth hands-free calling, power automatically connected, DSP echo cancellation noise elimination process 4. Can split the bluetooth headset privacy, protect your call privacy 5. After the power is turned on, the bluetooth automatic start, automatic connection 6. Phone with a bluetooth headset is automatically disconnected after shutdown 7. Supports HFP / HSP, A2DP / AVRCP,bluetooth protocol, etc. 8. Voice prompts 9. Support YES OR NO Voice answer hang up the phone 10. AUX IN input to the FM transmitter output 11. Dual USB Output: DC5V / 2.1A 12. Car starts after ignition, can display the current electric cars Voltage bottles, charging automatically displays the current charge Electric current.Specification: FM Frequency Range 88.1 ~ 107.9MHz Transmission Distance 5 m Audio forma