Feature 1. Bluetooth + MP3 function support stereo music playing, phone calling. 2. Support all audio devices that have Bluetooth capability, such as, cell phone ,tablet PC,laptop,computer etc. 3. 3.5mm audio jack, provides a simple wired connection of a variety of devices without Bluetooth. 4. Allow you to answer or reject phone calls anytime and anywhere. 5. Charged via USB, rechargeable battery, convenient and practical. 6. Playing time up to 8~10 hours, and continue talk time up to 8 hours, standby time up to 148 hours. 7. Good quality, foldable design and adjustable length hinges, very comfortable to wear and easy to carry. 8. Best choice for listening music, watching movie, chatting online etc. 9. With SD card insert,without any bluetooth device,can still enjoy music any time any where. 10. Rainbow color cat earphones, children's holiday gift earphones. Specifications: Specofication Bluetooth Version V5.0 Frequency 2.40 GHz-2.48 GHz Power 4 dBm, Class 2 Effective range 10M Sensitivity 105db / 0.1% Ber Frequency response 20Hz-20kHz S / n rate 110 dB Distortion 0.10% Speaker size 40mm Support A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 Voltage 3.7vdc (400 mAh rechargeable battery) Talking time 8 hour Music time 6 hour Standby time 148 hours Charging time 1.2 hours Current 20 mA Operate temperature -4 ~ + 131 F (-20 ~ + 55 C) Package Included: 1*Headphone 1*Charing cable 1*Audio cable 1*Manual