1. Bluetooth + MP3 function supports stereo music playback and phone calls. 2. Support all audio devices with Bluetooth function, such as mobile phones, tablets, laptops, computers, etc. 3. 3.5mm audio jack, you can easily connect various devices without Bluetooth. 4. Allow you to answer or reject calls anytime, anywhere. 5. Charging via USB, rechargeable battery, convenient and practical, 6. Play time up to 8~10 hours, continuous talk time up to 8 hours, standby time up to 148 hours. 7. Good quality, foldable design, adjustable length hinge, very comfortable and easy to carry. 8. The best choice for listening to music, watching movies, online chat, etc. 9. With SD card installed, without any Bluetooth devices, you can still enjoy music anytime, anywhere. 10. Rainbow cat earphones, children's holiday gift earphones;