Product Parameters:Product Model: MD188Bluetooth Solution: Actions 3015Bluetooth Version: Bluetooth 5.1Bluetooth Protocol: A2DP, AVRCP, H-SP, H-FPWorking Frequency: 2.400GHz-2.480GHzTransmission Distance: 10-20MCapacity: 40mahCharging Bin Capacity: 300mahMusic Life: About 6 HoursTalk Time: About 6 HoursSpeaker Specifications: Φ6mmCharging Interface: Type-C InterfaceCharging Current: 5V-1ACharging Time: 1-2 HoursProduct Color: Black, SilverProducts include1 * One pair of Bluetooth headsets1 * Charging box1 * Charging cable1 * User Manual2 * Ear cap