Hybrid Active Noise Cancellation: Mixcder E7 Wireless Headphone adopts the professional active noise cancellation technology, which can feed-forward and feedback ANC to Reduce Ambient noises by up to 90%. Perfect for working in the office, taking online courses, commuting and traveling. Bluetooth 5.0 and CVC 8.0 Mic: Upgraded E7 features the Bluetooth 5.0 for unparalleled sound quality, fewer drop-outs, lower latency and more stable connection. Integrated CVC 8.0 noise reduction microphone for hands-free calls then you can be heard clearly on the phone. Deep Bass and Hi-Fi Audio Sound: Built-in dual large 40mm driver units can produce powerful sound and authentic music with less audio delay and high dynamic bass response, which bring you an amazing audio enjoyment. Quick Charge and 30-Hour Playtime: A 5-8 minutes quick charge can get 2-hour playtime. Built-in 500mAh rechargeable battery provides up to 30 hours sufficient music playtime, a full charge keeps you powered all day. Comfortable and Portable Design: Fashionable color coating for your perfect look, ergonomic and protein leather ear cushions with 90° swivel ensure a pillow comfort and a snug fit. Carrying bag makes it easy to carry and store.