Feature: 1. Multiple Playback Modes: Four music playback modes: 1. Via Bluetooth. 2. Via micro Storage Card (support MP3, WMA, WAV format). 3, through the U disk. 4 Via 3.5mm sound cable. 2. Bluetooth FM Transmitter: 1.8 inch screen on board battery voltage level, also able to display caller ID, volume, FM frequency while playing music. 3. USB Charging: With 2 USB charging ports, you can connect a USB flash drive to play music and fully charge your device in a short time. 4. Simple Operation: Wireless remote control, insert the car bluetooth FM transmitter into the cigarette lighter socket, turn on the car FM radio and pair with the transmitter. 5. Safe: Including overload, short circuit and overvoltage protection, safe to use, light and compact, easy to carry. Specification: Item Type: Bluetooth FM Transmitter Material: ABS Rated Voltage: 12-24v Limit Voltage: 9-32v Output: Maximum 5V 2.4A Operating Temperature: <60℃ Music Format: MP3, WMA, WAV Support U Disk, Memory Card Capacity: 1G to 32G Bluetooth Version: 4.1+EDR Transmission Frequency: 76-108 MHz Transmission Effective Distance: 0.5-2m Bluetooth Effective Range: <10 Meters LCD Resolution: 128 x 64 (1.8 Inches) Remote Control Battery: Cr2025 x 1 (not Included). Package List: 1 x Bluetooth FM Transmitter 1 x Remote Control1 x 3.5mm Sound Cable1 x User Manual