Arespark Active Noise Cancelling Headphones is engineered to be more comfortable and lighter, Advanced active noise reduction technology quells airplane cabin noise, city traffic or a busy office, makes you focus on what you are hearing, enjoy your music, movies and videos. Extremely lightweight, 193g (6.8oz) Comfortable around-ear ear cushions for all-day wear Microphone for hands-free call Proprietary 40mm large-aperture drivers Bluetooth 5.0 chip 12 Hours Playtime with Premium HIFI Sounds Bought for my wife but she prefers in ear headphones. She only used for few hours