Specifications:

Brand model: Cowin E7: Upgraded Version (+ ANC Function)

Bluetooth: 5.0 ＆ NFC

Sound:40mm. large-aperture drivers

Playtime: 30h.

Impedance: 16Ω

S/N: ≥85dB

Frequency: 20Hz-20kHz

Noise Reduction Depth:28db

Power supply: Lithium battery or Micro USB cable  

Item Weight：13.6 ounces

Features:

 - A built-in 600mAh battery won't let your headphones power off, so you can enjoy your world without noise for 30 hours' long time;

- Professional active noise cancelling technology

- Proprietary 40mm. large-aperture drivers;

- High-quality built-in microphone and NFC technology; 

- The professional protein earpad and 90° swiveling earcups; 

What's in the box:

1 x Cowin E7 Bluetooth 5.0 eadphones

1 x Charging cable

1 x User manual