Product Features:
1.Built-in noise reduction circuit inverting precision ANC, it can effectively cut off 85% of the background noise.
2.dedicated high-quality noise-style 40mm diameter driver unit, to ensure the highest quality.
3.3.7v lithium ion battery,it was recharged without replacing batteries.
4.two modes of operation, to choose noise reduction state (subject to a battery), the normal state (without battery) ,it was easy to switch.
5.earmuffs imported sponge, soft and comfortable, long wear without fatigue.
Technical indicators:
1. Category: Active noise canceling headphones
2. Input terminals: DCФ3.5DC Plug 4
3. Working voltage: 3.7V
4. Maximum output power: 90MW
5. Noise level :18-20db
6. Signal to noise ratio (SNR): ≥ 90db
7. Power supply: 180mA lithium battery
8. Rated operating time:> 20h
9. Noise reduction modes: dual-microphone noise feedback
10. Speaker diameter: Ф40mm
11. Speaker Impedance: 32Ω
12. Speaker frequency response: 20Hz - 20KHz
13. Speaker sensitivity: 115dB
14. Noise level: ≤-78dBA
15. Dynamic range: ≥ 78 dBA
16. Distortion THD: ≤ 0.1%
17. Stereo crosstalk: ≤ -52 dBA
18. Wire length: 1.5m
