Sony WF1000XM4 earbud style truly wireless headphones with digital noise cancelling, smart listening technology, clear call quality, Bluetooth connectivity, ergonomic fit, water resistance, and all-day power. Digital Noise Cancelling with Integrated Processor V1 Exceptional sound quality with High-Resolution Audio Wireless Smart listening and superior call quality Precise Voice Pickup technology for clear hands-free call? Precise Voice Pickup technology, uses beamforming microphones and a bone-conduction sensor to allow the WF-1000XM4 microphone to pick up your voice clearly and accurately for hands-free calls – at home, in a café or wherever you are. Up to 24 hours battery life & Quick charging On a full charge with noise cancelling on, the headphones offer 8 hours, with the charging case providing a further 16 hours. With noise cancelling off, it’s even longer – 12 hours of power on a full charge, with a further 3x charges from the charging case, for up to 36 hours of play time. IPX4 water resistance As an added bonus, with an IPX4 water resistance rating, splashes and sweat won’t stop the WF1000XM4 earbuds!