Description Color: Black Battery Capacity: 300mh Input: 5V/2.1A Music Format: APE/FLAC/WAV/MP3/WMA Music Play Time: About 6 Hours Features 4 in 1, Support Bluetooth reception (RX) and Bluetooth transmission (TX), FM transmission, TF card playback, function 4 in 1. This Bluetooth adapter is equipped with LED digital display screen, helps to easily identify the modes of the adapter and to conveniently build connection with other devices. Comes with multiple functions, it works as a Bluetooth transmitter for TV to pair with Bluetooth headphones, as a Bluetooth receiver of wired speaker to connect to mobile phones wirelessly, as a FM transmitter to be used in vehicles, and also as a TF card player. TF card songs can all be played in both receiving and transmitting modes. The built-in highly sensitive microphone can make your traveling safe, support hands-free song listening / navigation / calling / FM Transmitter. TF Card supports formats such as mp3 / flac / wav / wma /ape. Bluetooth 5.0 for stable connection and high-quality performance. Powered by USB, no need to worry about battery issues. Package Include 1x Bluetooth Transmitter Receive(Black Color) 1x Audio Cable 1x USB Cable 1xEnglish User Manual