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| W770 Wireless Headset User Manual |
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| X. PRODUCT PARAMETER |
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| Headset: |
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| Drive unit |
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| 2 x 40 mm |
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| Frequency response |
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| 20Hz ~ 20KHz |
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| Impedance |
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| 32Ω±15% @ 1kHz |
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| Sensitivity (SPL) |
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| 103±3dB/1mW @ 1KHz |
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| Signal to noise ratio |
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| 65dB |
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| Working voltage |
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| 3.7V |
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| Working current |
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| 58mA |
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| Battery capacity |
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| 380mAh |
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| Continuous working time |
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| 6H |
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| Charging time |
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| 2.5H |
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| Input power |
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| 20mW |
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| Maximum input power |
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| 45mW |
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| Net weight of headset |
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| 160g |
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| Net weight of USB Dongle |
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| 6g |
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| Microphone: |
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| Frequency response |
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| 100Hz ~ 10kHz |
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| Impedance |
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| 2.2kΩ±10% @ 1kHz |
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| Sensitivity |
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| Signal to noise ratio |
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| 55dB |
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| USB Dongle specification: |
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| Working voltage |
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| 5V |
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| Working current |
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| 55mA |
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| Transmitting power |
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| <+6dBM |
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| Transmitting range |
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| 10M |
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| Modulation mode |
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| GFSK |
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| Frequency range |
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| 2404MHz ~ 2476MHz |
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| Interface |
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| USB |
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― 9 ―
W770 Wireless Headset.indb | 9 | 14:28:15 |
