Product Details:Bluetooth version:V5.0+ EDRWaterprproof up to IPX5Charging Voltage:Mircro USB 5V/0.5-1AHStandby time:≥200HCharging Time:1HBattery:3.7V/90MAH(Polymer rechargeable battery)Working time:4-6HBluetooth working range:10-15MFrequency range:2.401-2.480GHzDistortion factor:≤%1Speaker:16 20mW x 2Frequency response:20Hz-20kHzSNR:S/N≥95Working environmenr:-10~60°CMIC:4015 45DB+3DBProducts include1 * Bluetooth headsets1 * Charging cable1 * User Manual