1.AUX bluetooth receiver, CD sound quality, all the way to listen 2. Support mobile phone wireless connection, high resolution, support traditional wiring AUX IN speakers 3. Audio equipment with AUX input interface can be plugged and used 4. After turning on the phone, it will automatically connect to the Bluetooth of the mobile phone, enabling hands-free calls/navigation broadcasts, and more focus on driving 5. One key to complete incoming call answer/reject/hang up/last number redial. Bluetooth 5.0 supports circular distance transmission within 10 meters, the signal is stable, and you can enjoy wireless music Product Name: AUX Bluetooth Receiver Model: S-18 Bluetooth version: 5.0 Output interface: 3.5mm stereo plug MIC sensitivity: -42db Frequency Response: 50Hz-20KHz Signal to Noise Ratio: 75db Battery capacity: 145mAh Bluetooth distance: Barrier-free 10 meters Music playing time: 10 hours Charging: Micro-USB DC5V/100mA Product net weight: 12.6g Instructions: 1. Press and hold for 3 seconds to turn on the phone, turn on the mobile phone Bluetooth search (s-18), click to connect automatically, then the blue light is always on, time you use it, it will automatically reconnect, 3 minutes after the phone is disconnected, the S-18 will turn off by itself . 2. Incoming call status: short press the hands-free play button once to answer the call, press again to hang up (long press for 2 seconds to reject the call) 3. Quickly press the hands-free play button twice, you can dial the latest call in the record. size: 50 x 11.5 x 48mm Material: ABS colour: black Package Contents: 1 x Car MP3 Audio Bluetooth Receiver 1 x Charging cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.