CEUTA Wireless Car Bluetooth 2.5A Dual Usb Turbo Charger with LED Display, Music FM Transmitter, Hands-Free Calling,Voltage Monitor (Colour May Vary) This Bluetooth Car charger comes with USB output 5V/2.5A. it is able to charge devices fast. It will automatically adjust output based on the device you have music player and fm transmitter. Besides, during the bluetooth connecting, play the phone's music and fm transmitter to car audio, perfect, as calling incoming automatically switches to the speaker's state, call end then automatically back the music player. Rated Operating Voltage: 12V Working Voltage Limits: 9-26V USB Output: 5V/2A Working Temp: 0-50å¡ Support Play Format : MP3 WMA SNR: >60db Distortion: <0.1% Frequency Response: 20Hz-15Khz Left and Right . Channel Separation: >60db BT Version: Version 2.1+EDR Bluetooth Sound Processing: A2DP(Advance Audio Distribution Profile) Bluetooth Transmission Distance: 10M Bluetooth Microphone Effective Range: 0.5-2M FM Transmission Frequency: 87.5-108Mhz FM Transmitter Mode: Stereo Digital PLL Locking Color: Depand on StockPackage Included: 1x Bluetooth FM Transmitter Car Charger 1x Audio Cable 1x User Manual. Description: Now make your car smart with this all-in-one roboster bluetooth fm car charger what you can do with this car bluetooth fm transmitter: fm transmitting adjust this bluetooth fm transmitter for car to the same frequency with car audio, music from cell phone or tf card can be played through car audio. Handsproof calling when cell phone matched with the bluetooth fm transmitter car kit, hands-proof talking will be realized.