40MM drivers for crystal-clear sound: Audio that is crystal clear and discomfort-free! Listen to your music as it was intended to be heard. Extended Battery Life 20H: designed with a large capacity rechargeable battery that can play music for up to 20 hours. Everything is under control: The touch area under the right ear cup makes it simple to operate the headphones. Connectivity in Two Modes: Integrated Microphone Long-lasting battery life of 20 hours