Enjoy detailed wireless audio with the kef mu7 silver grey over-ear headphones. Featuring 40mm dynamic drivers, bluetooth 5.1 With aptx hd and intelligent active noise cancellation, the mu7 combines kef's acoustic engineering with up to 40 hours of battery life. Created in collaboration with designer ross lovegrove, the sculpted silver grey finish, lightweight aluminium construction and memory foam ear cushions bring together distinctive styling, comfort and convenient everyday listening.Detailed wireless audio with kef acoustic engineeringat the heart of the kef mu7 silver grey headphones are specially tuned 40mm full-range dynamic drivers. Developed by kef's acoustic engineers, these drivers reproduce frequencies from 20hz to 20khz, delivering detailed audio across the audible frequency range.For wireless listening, qualcomm aptx hd technology supports audio transmission at up to 24-bit 48khz when paired with a compatible device. This helps retain musical detail during bluetooth playback, while additional support for aac, sbc and standard aptx provides compatibility with a wider selection of audio sources.Bluetooth 5.1 Enables wireless connections with compatible smartphones, tablets, computers and other bluetooth devices, offering a specified operating range of up to 10 metres.Adaptive noise cancellation for focused listeningwhether you're travelling, working or enjoying music at home, the kef mu7's smart active noise cancellation helps reduce unwanted sounds from your...