ACEFAST H9 Active Noise Cancelling Headphones Wireless Over-Ear Headsetwith Multi-Function Button - Grey 【Advanced Noise Cancellation】Featuring 30dB hybrid noise cancellation technology,easily switch between ANC and music modes for an immersive listening experience 【Premium Comfort】Crafted with skin-friendly protein leather and high-rebound foam,these headphones offer lightweight breathability for extended wear 【Versatile Controls】Multi-functional string button design allows for easy one-touch operation of various features 【Rapid Charging】Quick 10-minute charge provides up to 7 hours of listening time,perfect for on-the-go use 【Extended Battery Life】Enjoy up to 55 hours of music playback (45 hours with ANC mode) and 40 hours of talk time on a single charge Specifications: BT Version: 5.42 Battery Capacity: 500mAh Charging Time: 2.5 hours Music Playback Time: 55 hours (45 hours with ANC) Talk Time: 40 hours Noise Cancellation Depth: -30dB Dimensions: 177 x 78 x 200mm Weight: 221g Package included: 1 x Headphones 1 x Carrying Bag 1 x Audio Cable 1 x USB-A to USB-C Charging Cable 1 x English and Chinese Manual