1.[Active Noise Cancellation]The ANC + ENC Tecnhology can block 90% noise up to 35dB. Active Noise Cancellation blocks out unwanted sounds, helping you keep your focus wherever you are; This noise cancelling wireless bluetooth earbuds uses this technology, helping you communicate more clearly when playing games or calling.Low latency Ambient Sound mode picks up the sounds you want to hear, so you always have the perfect audio level for every moment 2.[Hi-Fi Stereo Surround Sound]13mm Large-Size dynamic speaker makes you enjoy the music deeply. Combined with stereo sound, these noise cancelling headphones a crisp and clear sound and amazing booming bass.There is almost no delay in the gaming/watching videos. Pictures and bluetooth headset sound are synchronized. Provide a much better using experience. 3.[Smart Auto-Pairing & Long Lasting]--Just open/close the case, it will power on/off automatically and connect/disconnect to the paired device. 6-8 hours Music Playtime, 4 hours Talk time, totally playtime up to 30+ hours using with charging case. NOTE: When pairing the earbuds with a device, please check if it is being used with another connected device, otherwise, you need to disconnect them first, and then pair the device. 4.[Comfortable Fit& Smart Touch Control]The half in-ear design with an angle of 108 degrees, which makes the earbuds comfortable and stable to wear. The touch-sensitive control allows easy navigation through settings and the ergonomic, streamlined design provides comfort, so you can listen to music undisturbed during exercise, working, running, walking, traveling.