M7 Car Charger bluetooth FM Transmitter Built-in Microphone Support TF Card U Disk

Feature 1 This equipment can detect batterys voltage 2 Support bluetooth hands free calls built in microphone secure answer calls 3 Support mobiles A2DP function Music will be played directly while the mobile phone is connected 4 Mobile phone can be connected automatically when the device powered on 5 Support an external TF card U disk can play music files in MP3 WMA format 6 Integrated car charger of output 5V 3 1A is available for charging handheld devices in car Specification bluetooth VersionV3 0 EDRLimit Voltage9V 36VRated Working Voltagae12V 24VSensitivity 42db 3 db 360Voltage5V 0 5Working Current45mA max Stand by Current25mA max Frequency2 402 2 480 ghzbluetooth Effective Range10 15 metersSensitivity 92 dBmRF Output4 dBmFM Frequency87 5MHz 108 0MHzTransmitted Power87dBuv 107dBuvMicrophone Effective Range2 metersPackage Included 1 X Car Charger