🔥🔥 Product description: ✨1. Bluetooth specification Bluetooth V4.2 BK3266, supports protocol Headset Hands-free A2DP Avrcp ✨2. Transmission range 10 meters, transmission frequency 2.4GHz ✨3. Speaker: 10MM, impedance: 32Ω±15% ✨4. Frequency response: 50~20000Hz ✨5. Sensitivity: 95db±3db ✨6. Charging voltage DC5V, charging time: about 1.5 hours ✨7. Headphone battery capacity: 170mAh ✨8. Talk time 10 hours, 10 hours music time (80% volume), standby time 200 hours 9. Product size: L71×W26×H16mm, product net weight: 10G ✨10. Battery display <supports A*ple phones and some Android phones>