Features 1 TWS wireless doublet stereo HIFI super clear sound 2 New generation of bluetooth 5 2 chip provides faster connection more stable lower latency and lower power consumption 3 Both left and right ear headsets have complete bluetooth headset function can play songs phone calls can be used alone can be used in pairs 4 Adopts rechargeable lithium batteries 320mAh big battery capacity 5 13mm large dynamic driver highly sensitive composite diaphragm highly restore music details 6 ANC active noise reduction technology make calls more HD Specifications 1 Brand USAMS2 Model NX103 bluetooth version V5 24 Color black white5 Earphone Battery 35mAh6 Charge Box Battery 320mAh7 Playing Time 5H8 Calling Time 2H9 Standby Time 35H10 Charging Time 1H11 Charging Type Type C12 Distance ≤12m13 Sensitivity 119dB±3dB14 Impedance 32Ω13 Charging Case Size 52 46 5 24 6mmPackage Include 1 Pair TWS bluetooth Headsets 1 Charging Case1 Type C Cable1 User Manual