Product Features：
- Long Endurance：About 25 hours battery life, fully charged
- Flexible Usage: Supports wired/2.4G/Bluetooth connection playback, Wired and wireless, flexible to use.
- Key Control very convenient: Press the physical button on the left earmuff at will Mastering all kinds of adjustments.
Specifications:
- Speaker Size: 50mm
- Impedance: 32Ω+-15%
- Sensitivity: 105+-3db
- Frequency Range: 20HZ-20KHZ
- Microphone Size: 6.0*2.7mm
- Microphone Sensitivity: 105+-3dB
- Control Button: Yes
- LED Working Voltage: DC5V+-5%
- Working Current: ≦180mA
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