Specification:Bluetooth protocol: 5.0Communication distance: 10m/32.81ftSingle and double ears: unilateral hands freeChannel: StereoHow to use: hanging earBattery capacity: 170mAhStandby time: 250hListening to the song: 20hCall duration: 25hCharging Time:<;;1.5 HoursDynamic Horn: 6mm/0.24inSensitivity: 108DBFeartures:The left and right ears are free to wear,180° rotation adjustment, which can be adjusted according to your wearing habits. This headset is very convenient to use and is suitable for outdoor activities.Long standby,170mAh polymer lithium battery, with 5.0 upgraded version of imported low-power chips, long standby for 250 hours, continuous listening songs for 20 hours and talking about 25 hours. The battery is very durable and can be used for a very long time.Life grade waterproof,Protects This Bluetooth Headset from Sweat, and Coffee Spills so You Can Wear the Headset in the Gym or at the Running.Intelligent noise reduction, CVV 6.0 + DSP audio processing dual noise reduction technology, can maintain the sound even in noisy environments.It is also very comfortable to wear for a long time. According to the ergonomic design, there is no pressure to wear.If you have any questions, please contact us in time, we will answer your inquiry within 24 hours.