Product Parameters:Bluetooth Version: V5.0Product Size: 55*50*29mmPacking Size: 120*70*50mmControl Method: Touch ButtonType: Polymer Lithium BatteryCharging Method: Power Adapter OutputCharging Time: About 1.5 HoursBluetooth Effective Distance: ≤10 MetersMusic Time: About 4 Hours (80% Volume)Talk Time: About 3 Hours (90% Volume)Support Protocol: A2DP, AVRCP, HSP, HFPHeadphone Capacity: 45mAhHeadphone Compartment Capacity: 300mAhHeadphone Input Parameters: 500mA-1000mAWith Packaging Weight: 124gPacking List:Bluetooth Headset*2Charging Compartment*1Data Cable*1Manual*1