V4.0 Wireless Handsfree Headset with Bluetooth Function Dual USB Car Charger<br /><br /><br /> Features:<br />  <br /><br /> FM transmit frequency: 88.1 ~ 107.9MHZ<br /> Use CSR4.0 main chip low-power Bluetooth<br /><br /> Bluetooth hands-free calling, power automatically connected, DSP echo cancellation noise elimination process<br /><br /> Can split the Bluetooth headset privacy, protect your call privacy<br /><br /> After the power is turned on, the Bluetooth automatic start, automatic connection<br /><br /> Phone with a Bluetooth headset is automatically disconnected after shutdown<br /><br /> Supports HFP \/ HSP, A2DP \/ AVRCP,Bluetooth protocol, etc.<br /><br /> Voice prompts<br /><br /> Support YES OR NO Voice answer hang up the phone<br /><br /> AUX IN input to the FM transmitter output<br /><br /> Dual USB Output: DC5V \/ 2.1A<br /><br /> Car starts after ignition, can display the current electric cars Voltage bottles, charging automatically displays the current charge Electric current.<br /> <br /> Specification:<br /> <br />   <br /> <br />  FM Frequency Range: 88.1 ~ 107.9MHz<br /> <br />  Transmission Distance: 5 m<br /> <br />  Audio formats: MP3 \/ WMA \/ WAV \/ SBC<br /> <br />  SNR: 68dB<br /> <br />  Distortion: &amp;lt;0.1%<br /> <br />  Frequency response: 20Hz-15Khz<br /> <br />  Left and right channel separation:&amp;gt; 60dB<br /> <br />  Bluetooth version: Bluetooth v4.0<br /> <br />  Bluetooth protocol: HFP \/ HSP, A2DP \/ AVRCP<br /> <br />  Operating Voltage: DC 9 ~ 26V<br /> <br />  USB Output: DC 5 \/ 2.1A<br /> <br />  Power consumption: &amp;lt;1W (without the external charging)<br /> <br />  Working temperature: -10 ~ 70 Degree<br /> <br />  Humidity: 0 ~ 95%<br /> <br />  Dimensions: 21.5 (L) * 5.5 (W) * 2.1 (H) CM<br /> <br />  Weight: 80g<br />  <br />  Package Included:<br />  <br />  1 X V4.0 Wireless Handsfree Headset