FM Transmitter Hands-Free Bluetooth Car Kit Wireless Mp3 Radio Modulator Audio Player Voltage LCD Display USB Car Charger Voltage:12V Special Features:can read via USB U disk, or via TF card slot Out Power:5V / 2.1A Model Name:G7 FM Transmitter Item Size:8*2.5*9.7cm / 3.1*1*3.8" Item Weight:100g Material Type:ABS Item Type:FM Transmitters Item Type:FM Transmitters Item Weight:100g Three language user guide:English,Russian,Spanish Files Supported:MP3/WMA FM Frequency Range:87.5-108.0MHz Working Voltage:DC 12V-24V Feature 1:Support hands-free calling,built-in microphone Feature 2:Noise cancellation by CVC,wind noise suppression Feature 3:Power-off memory Feature 4:USB/TF card play mode