Active Noise Cancelling technology. Significant noise reduction for travel, work and anywhere in between. Advanced active noise reduction technology quells airplane cabin noise, city traffic or a busy office, makes you focus on what you want to hear,enjoy your music, movies and videos. The noise cancellation function can work well both in wire and wireless mode. | Proprietary 45mm large-aperture drivers. Deep, accurate bass response. The Active Noise Cancelling around-ear headphones from COWIN give you crisp, powerful sound and quiet that helps you enjoy your music better. The goal that provide Customers with better sound quality, is our constant pursuit. | High-quality built-in Microphone and NFC technology. COWIN E7 provides high-quality built-in microphone for hands-free calls, Which is convenient for you to free yourself from wires. NFC pairing aided by voice prompts, promises quick and stable connection with your Bluetooth enabled devices, Powerful Bluetooth Function. | The professional protein earpad and 90° swiveling earcups. More durability and comfort, Enjoy high-quality, Long-listen comfort. Skin texture, lightweight comfortable around-ear fit you can wear all day long. Gentle Reminder: please take off the headphone every 2-3 hrs to get your ears relax, in order to get better hearing enjoyment, and keep the head comfortable. | 30 hours playtime per charge at Bluetooth mode. A built-in 750mAh battery won't allow your headphones power off, you can enjoy your world without noise for 30 hours' long time. Don't need to worry the power shortage problem on the long travel. 18-month warranty and quick response & friendly customer service. Dedicated customer service team, provide you with quick response and friendly customer service, which will always serve for you and certainly satisfy you.