These noise-cancelling headphones have oversized 40 mm dynamic drivers that produce detailed sound and thumping beats with BassUp technology. Connect to two devices simultaneously with Bluetooth 5.0 and instantly switch between them. Tailor your sound using the customizable EQ in the Soundcore app. Up to 40 hours of battery life with active noise cancellation; up to 60 hours in normal mode. A quick 5-minute charge offers 4 hours of playtime.