The Haylou S35 Headphones have 40mm dynamic drivers and Hi-Res Audio support for exceptional sound output. It has Active Noise Cancellation that blocks out ambient noise and lets you enjoy your music without any distractions. The soft cushioned ear pads and lightweight design of S35 makes it comfortable to wear. You can get up to 60 hours long battery life with ANC off and 40 hours with ANC on for day-long playback. Haylou S35 also supports app for you to tweak sound exactly the way you want.