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

Feature: 1.This equipment can detect battery's voltage. 2.Support bluetooth hands-free calls, built-in microphone, secure answer calls. 3.Support mobile's 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 Version V3.0+EDR Limit Voltage 9V-36V Rated Working Voltagae 12V-24V Sensitivity -42db+/ 3 db 360 Voltage 5V+ / -0.5 Working Current 45mA(max) Stand-by Current 25mA(max) Frequency 2.402-2.480 ghz bluetooth Effective Range 10-15 meters Sensitivity -92 dBm RF Output 4 dBm FM Frequency 87.5MHz-108.0MHz Transmitted Power 87dBuv / 107dBuv Microphone Effective Range 2 meters Package Included: 1 X Car Charger