Features Precision Bluetooth earbuds that produce crystal clear sound Compact carry case that doubles as a charger Supplied with a Micro-B USB cable and instruction leaflet Specifications Name Description Earphone Battery 50 mAh Charging Box Battery 350 mAh Bluetooth Version 5.0 Wireless Range 10m Box Charging Time 2-3 times for earbuds Playing Time 4-5 hours Impedance (ohms) 32 Sound Pressure Level (dB) =/>90dB Dynamic Frequency Response Range 20Hz-20KHz Country Of Origin China Colours White Dimensions Gift Box: L 60mm x W 60mm x 31mm Precision Bluetooth earbuds that produce crystal clear soundCompact carry case that doubles as a chargerSupplied with a Micro-B USB cable and instruction leafletEarphone Battery: 50 mAhCharging Box Battery: 350 mAhBluetooth Version: 5.0Wireless Range: 10mBox Charging Time: 2-3 times for earbudsPlaying Time: 4-5 hoursImpedance (ohms): 32Sound Pressure Level (dB): =/>90dBDynamic Frequency Response Range: 20Hz-20KHzCountry Of Origin: China