New Bluetooth Headset Ear-mounted Business Stereo Headset Hands-free Sports Headset With MicrophoneFeatures:Long battery life, noise reduction Bluetooth compatible headsetThe built-in 50 mAh polymer lithium battery is equipped with Bluetooth compatible Smart 5.2 chip, which reduces power consumption by 70%, and bid farewell to frequent charging troubles.Powerful composite power diaphragm, automatically filter external noise, clear calls with bilateral microphones180 rotating earpiece, free to left and right ears and adjust the angleGo to 0 delay silky experience, play games with simultaneous audio and videoProduct Description:Specifications:1.Bluetooth version: 5.22.Transmission distance: 10 meters without barriers3.Bluetooth protocol: HFP/HSP/A2DP/AVRCP4.Operating temperature: -10-50 5.Charging voltage: 5V/1A6.Battery capacity: 50 mA7.Charging time:1 hours8.Music Play Time:4-6 hours of continuous playback9.Calling Time:4-6 hours of continuous talk10.Standby Time: 12 hour11.Function keys: touching function12.Microphone type: built-in Mic13.Comfortable Can be worn on both left and right earsPackage:1x Bluetooth headset1 x charging line1 x user manual