Bluetooth version: V5.1 Bluetooth Distance: 10M Mic sensitivity: -40 �±3dB Mic directivity: omnidirectional Speaker diameter 40mm Speakerfrequency range: 20Hz~20KHz Speaker impedance: 32 �±15% Battery capacity: 400mA Charging interface: Type C Operating time: 8 hour Standby time: 100h Color: new blue, elegant pink, lake green, khaki, black
