Car Bluetooth Wireless FM Transmitter AUX Radio Adapter MP3 Handsfree Call Kit Features: Support Bluetooth hands-free phone calling via its built-in microphone Noise and wind suppressed by CVC technology to create full duplex sound quality Support mobile's A2DP function. Music will be played directly while the mobile phone is connected Mobile phone can be connected automatically when the device turns on Support an external TF card, can play music files on MP3/WMA format Integrated car charger of output 5V-100mA, is available for charging handheld devices in car Specifications: Bluetooth version: V3.0+EDR Class 2 Frequency: 2.402~2.480GHz Sencitity: -42dB±3dB 360round Working voltage: 5V±0.5V Working current: 45A Max Standby current: 25mA Max Effective distance: 5m Sensitivity: -92dB RF Output: 4dBm Car charger input voltage: 12-26V Output voltage: 5V±0.25V Output current: 1000mA Max Shourt circuit protection current: 2.4-3A Color:Sliver,Black Package Content: 1 x Car FM Transmitter 1 x Remote Control