Product Parameter

Speaker drivers: 40mm
Frequency response: 20Hz-20KHz
Sensitivity: 110dB
Maximum Output: 115dB
Total Harmonic Distortion: Less than 1.5% at 1kHz out 1mW
Active Noise Reduction: -14dB (at maximum)
Rated Wattage (L + R): 60mW
Weight: 250g(only headphones with cable)
Connector: 3.5MM (1/8") standard plug, gold-plated
Interface: 3.5MM audio input, audio output/input, Micro USB charging port
Cable Length: 1.2 meters
Battery charging voltage: 5V(500mA)
Working voltage: 3.7 -- 4.2V
Battery charging time: 3.5-4 hours
Battery capacity: 550 mAh
Operating Frequency Range: 2.4GHz-2.48GHz
Bluetooth transmission distance: 10 meters
Bluetooth compliant: V3.0
12 hours for talking time