Enjoy Music: With help of the audio transmitter, you can enjoy music on the road without modifying your car. Experience high-quality music playback with stereo A2DP technology and support for MP3/WMA formats. Quick Charge: Compared with other similar products, our Bluetooth-compatible transmitter has dual USB charging ports so that it can fast charge your devices. Hands-free Calling: This product not only provides wireless music transmission, but also offers convenient hands-free calls. You can answer phone calls with a press of the button. Easy to Use: Using high-performance professional-grade Bluetooth-compatible 4.2 chip, you can use the adapter to transmit MP3 music from your phone to your car stereo via-wireless transmission. Easy to use. Wide Compatible: As the perfect solution for enjoying music and making hands-free calls while on the road, our transmitter is compatible with all types of mobile phones, as well as other devices. Item Name: Audio Transmitter Material: ABS Microphone Range: 0-2 Meters Audio Distortion: 0.1 Percent Signal-to-noise Ratio: >60db Rated Working Voltage: 12V Power Consumption: 1W Bluetooth-compatible Version: 5.0 Supported Formats: MP3/WMA Frequency Response: 20Hz-15kHz Transmission Frequency: 87.5-108MHz Working Temperature: Minus 20 Celsius Degree-50 Celsius Degree Limit Working Voltage: 9-26 V Bluetooth-compatible Transmission Distance: 10-15 Meters Features: Wireless, Hands-Free Calling, Quick Charge Size Details: 12cm x 8cm x 6cm/4.72" x 3.15" x 2.36" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Audio Transmitter