PRODUCT OVERVIEWHigh quality sound and comfortable, all-day listening in a wireless headphone. The WH-CH520 have an ultra-long battery life of up to 50 hours and a 3-minute quick charge gives you up to 1.5 hours of audio playback.KEY FEATURESLONG BATTERY LIFE: With up to 50-hour battery life and quick charging, you’ll have enough power for multi-day road trips and long festival weekends. (USB Type-C Cable included)HIGH QUALITY SOUND: Great sound quality customizable to your music preference with EQ Custom on the Sony | Headphones Connect App.LIGHT & COMFORTABLE: The lightweight build and swivel earcups gently slip on and off, while the adjustable headband, cushion and soft ear pads give you all-day comfort.CRYSTAL CLEAR CALLS: A built-in microphone provides you with hands-free calling. No need to even take your phone from your pocket.