YAKER Bluetooth FM Transmitter, Wireless Radio Audio Adapter with Car Charger, Support Music APP, Stereo MP3 Player AUX Port USB Flash Drive Micro SD Card AUX Input Output for iPhone Smartphone Unique APP-Connect Device - Featured with some music apps, so you DO NOT NEED download any mp3 play app and will be enjoy the music that may unplayable from Google. Here are abundant web sauces, such as the music, radio,storytelling,comic,etcs. HD Stereo System- Built-in HD Stereo System microphone that offers ultra clear sound and anti-interference processing design, safe to answer the call or call up while driving. Fast Charging - Designed with USB port, comes with a 2.4A charging port to charge most USB devices, suit for charging mobile phone and tablet PC and ipad.Plug in any music device with USB cable. Wide Compatible- Works great for iPhone 7/6S/6/SE/5S/5/4S/4/plus, Samsung, HTC, LG, Blackberry, Sony, Tablet PC, iPad, other bluetooth enabled devices, also support maximum 32GB micro sd card and MP3/MP4 players through aux input to play. How to Change Language - Press the left and right button together about few seconds. Bit Rate : 64  320 kbps Bluetooth connect distance:5 meters FM frequency range: 87.5  108MHz SNR: 85dBFM:65dB) Harmonic distortion: &lt; 0.05%FM:&lt;0.1% Operation temperature: 0- 60