This is an MP3 player or car stereo adapter with an LCD screen, music player for running, home, and in the car. The lightweight mini body is easy to carry, allowing you to easily slip your MP3 player into your pocket and backpack and enjoy music anytime, anywhere. The Bluetooth function uses Bluetooth 5.0 technology, the signal transmission is faster and more stable, professional intelligent digital noise reduction chip, provides HIFI-level sound effects, can be used with speakers and headphones, supports background music playback, note: this is a receiver, not a transmitter. Long battery life when connected to a mobile phone, it only takes 2-3 hours to fully charge, the MP3 music player allows you to enjoy up to 6 hours of true lossless music, with normal and EQ dual sound modes, allowing you to choose and design your favorite music mode. Compact and portable color screen, good visual performance, comfortable grip, scratch-resistant and durable. User interface design, easy to use, mini size, clip design. You can easily put it in your pocket. It is also a good gift for family and friends. 1. Bluetooth solutions: 5.0 EDR, A2DP, HSP, AVRCP 2. Frequency: 2.4GHz-2.48GHz 3. Bluetooth receiving distance is 10 meters 4. Charging voltage: DC 5V 5. Battery is 200mAh 6. Working time: about 6 hours 7. Bluetooth receiving function: connect 1 mobile phone 8. Weight: 55g color box 9. Accessories: Host*1, 3.5mm audio cable*1, charging cable*1, manual*1 10. Packing size: 100X78X22mm 11. Color: Black Quantity: 1 Piece Note: Manual measurement, there may be 1-2cm/1-3g error, which is not a quality problem. Due to different screen display, there may be color differences between the real object and the picture, the main picture shall prevail.