· Jack lock design: For make sure the cable lock in place to ensure a secure connection, we add jack lock system on the stereo Aux cable. You don't have to worry about any connection problems when connecting the jacks and sockets.· Soft Memory Earcups: The breathable protein skin earmuffs and the soft sponge inside improve the wearing experience, make sure good sound insulation and there is no discomfort for long-term wear· 72 hours playtime&40mm driver: 72-hour playback time to deliver a wireless experience. 40mm drivers - inner & outer rings deliver vibrant bass, vivid midst & vivacious highs without overlap· Works with: All devices have 3.5mm or 6.35mm audio jack. Bass sound, durability, and comfort. These are the headphones you've been looking for· Additional 6.3mm Cable: Measures 9.8 feet long (stretched), coiled 6.3mm and 3.5mm male-to-male stereo audio cable, Connect PC, pads, smart phones, tablets and other mobile devices with your stereo or speaker system