AEC BK7 Cute Bear Bluetooth Headset with LED LightFeatures: 1. Built-in 40mm in composite diaphragm liquid crystalline polymer is open, the stereo fid analytical wl to three frequency equilibrium . 2. Bluetooth 5.0 connection distance can reach 10-20 meters,and transmission faster,more stable connection. 3. Lighting effectsBears earLighting effects Seven color colorful fashion, colorful light. 4. Cable and wiress dual use.is not only a wiress headset,also can connect the headset to 3.5mm socket device,used as a wired headset. 5. Noise reduction HD calls,effective filtering of ambient noise. 6. Low power consumption and long endurance,save power for long endurace. Specifications: 1. Receiving distance: 15m 2. Sensitivity: 105+/-3dB 3. Listening time: 12 hours4.Charging time: 2 hours 5. Usage mode: Bluetooth compatible/plug cable 6. Standby time: 148 hours 7. Horn size: 40mm 8. Battery capacity: 400mAh 9. Packing size: 22.5x21x5cm 10. Product weight: 410gPackage Included:- Headset x 1- Charging cable x 1- Chinese and English instructions x 1