Full frequency point emission: 87.5-108.0MHZ, with stable FM signal, anti-interference design, enhanced sound experience and noise suppression( A2DP) technology. Advanced Version Bluetooth 4.2, professional Bluetooth chip automatically recognizes your device and establishes a stable connection with it within a long distance.

Rotary design/ Dual 5V/2.4A USB Charge: dual USB charging port can be hidden, no switching/open dual-path 2.4 A USB smart port can be quickly charged, and the quick charging port of samsung or iPhone device .

Two Playing Modes: A:Via Bluetooth; B: Via TF card(MP3,WMA,WAV format supported); Support listening to music while charging and power off memory function, from broken song began to play.

Hand-Free Calling&Perfect Stereo Sound: Built-in Microphone, Switch to hands-free mode automatically from music playing status when receiving calls. Answer/Reject/Hand up/Recall all in one keypad.Adopted advanced CVC noise cancelling, wind noise suppression and full duplex sound technology, the FM transmitter filters out background noise to guarantee high quality sound.

Broad compatibility: testing for all types of 12-24V vehicles, compatible with intelligent devices such as iPhone, iPad and Android phones. The battery voltage will be displayed for the first three seconds after powering on. If the voltage is below 12V, the alarm lamp will flash. Warranty: 60 day refund and 12 months replacements.