Features: 3.5mm AUX Adapter: You can pair and connect your mobile phone or laptop with your old car stereo/home stereo /3.5mm wired headphones/speakers. It is equipped with advanced Bluetooth-compatible 5.0 chip, with stable connection, fast transmission speed and wide signal range. Hands-Free Call & Built-in Microphone: Car-assisted Bluetooth-compatible adapter has built-in microphone, which can answer/hang up/reject/redial calls with one button. In the fully charged mode, music can be played continuously for about 10 hours. You can play music while charging. The low power consumption state is also easy to use. Safe Driving: Bluetooth-compatible 5.0 voice navigation. When the device is turned on, it will automatically connect to the Bluetooth-compatible of the mobile phone, thus realizing hands-free call/navigation broadcast and focusing more on driving. Bluetooth-compatible 5.0 supports remote transmission within 10 meters. Ultra-stable Connection: Our Bluetooth-compatible audio adapter is equipped with Bluetooth-compatible 5.1 chip, which can achieve stable pairing, fast transmission and wide signal range (33 feet). With the help of 3.5mm AUX port, you can connect non-Bluetooth-compatible car audio system, home audio, wired headphones/speakers, power amplifier/home theater, etc. Then you can enjoy wireless -fidelity music streaming! Automatic Connection: When it is turned on next time, this Bluetooth-compatible receiver will automatically connect to the last paired Bluetooth-compatible device. With Bluetooth-compatible antenna, sound transmission is more stable, noiseless, more synchronous/low delay. Notice: Actual color may be slightly different from the image due to different display an effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Material: ABS Output interface: 3.5mm Bluetooth-compatible version: 5.0 Transmission distance: 10m Function: LED indicator/microphone Length: 30cm-113cm Include: 1*Audio Adapter 1*Manual