【 HEADPHONES ON, SOUND OFF 】: Are you travelling by airplane, but the engine noise doesn’t let you sleep? Are you working or studying, but you can’t concentrate because of the noise around you? Then wear the noise cancelling Bluetooth headphones and flip the switch. Immediately, any sound will disappear and you will able to sleep or work. Conveniently, the wireless headphones are foldable, so you can put store them in their protective bag and carry them around with you wherever you go!