About this item Reduces most environmental noise: LFGKeng Active Noise Cancelling Headphones adopts the latest noise reduction technology, a combination of active noise reduction and passive noise reduction, which can detect and eliminate a wider range of low and intermediate frequency noise, allowing you to enjoy true pure music and focus on your own business, no matter on a noisy street or coffee shop. Ultra Comfort and Lightweight 90° swiveling earcups: Enlarge breathable high-grade protein ear cushions softly surround the entire ears making you feel extremely comfortable that, 90° swiveling Ergonomically designed and lighter over-ear headphones provide all-day comfortable experience. 30H Playtime & Audio cable: Low power consumption technology allows our Bluetooth ANC headphones can continuously play up to 30 hours in standard music mode, up to 12 hours in ANC mode. By included 3.5mm audio cable, you can also change it to wired mode when powers off, no long trips power shortage problem anymore. Hi-Fi Audio& HD Microphones:With customized 40mm drivers, LFGKeng deep bass wireless headphones shine through with thumping bass on the lows and crystal clarity on the highs, each beat to its very essence.built-in high-definition microphone, can clearly capture your real voice when using voice assistant, video conference, or online class. Bluetooth 5.3 connection: Bluetooth 5.3 wireless connection technology enables ultra-fast and stable connections within a range of 33 feet (10 meters). Compatible with All Devices with Bluetooth Enabled or 3.5mm Audio Jack, make stable clear Hands-free calls which is convenient for home office/study. › See more product details