Immersive Sound: Mpow Noise Cancelling Bluetooth Headphones use dual 40mm drivers and advanced CSR Bluetooth chip to brings balanced midbass and bright treble for you Professional Active Noise Cancelling Technology: 25dB better noise-cancelling effect; Mpow updated ANC technology significantly reduces noise to help you focus on what you want to hear; Wear the Bluetooth headphones and flip the switch, you will find your quite personal space; Note: Human voice cannot be completely eliminated 50 Hours Long-lasting Music Playback: With built-in 800mAh large battery, Mpow wireless headphones can provide up to 50 hours of music streaming after a fully Charge; You can also enjoy beautiful music longer or plug in the included audio cable when the battery is low; Note: Turn off ANC Button when not in use to avoid wasting power Upgraded Soft Ear Cushions for Comfort: Professional protein ear pads, 90° swivelling ear cups and adjustable headband deliver better durability and comfort; Mpow active noise-cancelling headphones with the lightweight design is comfortable for all-day wearing; Note: Take off the Bluetooth headphone every 1-2 hours to get your ears to relax and protect them from the muggy environment in use Hassle-free Clear Calls and Stable Bluetooth Connect: Built-in CVC 6.0 noise suppression microphone for clearer call quality, even in a loud environment; Mpow Bluetooth headphones' connection range can reach 56feet or 17meters, much further than conventional Bluetooth headphones; It is convenient in any situation where you don't want to deal with dangling cables, like commuting