Product name: 5.4 New Bluetooth receiver High sound quality Bluetooth receiver Product size: 10.5*9.5*2CM/4.13*3.75*0.8in Product color: Black Product material: ABS Description: 1. Bluetooth 5.4 receiver Apple interface old speaker to Bluetooth speaker 2. Adopt the new Bluetooth version, more sensitive transmission, stronger signal 3. Easy compatibility of multiple models Compatible with most Apple speakers in the world 4. Insert the old stereo 30-pin base to upgrade Bluetooth for the stereo and receive mobile phone wireless music 5.10m long distance transmission Built-in antenna, reduce signal interference, the occurrence of broken edge Attention: 1. Due to different display and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Thank you very much! 2. Please allow measurement deviation due to manual measurement.