The Sony WF-C510 are compact true wireless earbuds designed for comfortable daily listening, calls and travel. They offer clear Sony sound, Ambient Sound mode and a lightweight in-ear design. With up to 22 hours of total battery life using the charging case, quick charging and IPX4 water resistance, they are practical for music, work, commuting and everyday use. Key features True wireless in-ear earbuds with Bluetooth connection Compact and lightweight design for comfortable use Ambient Sound mode to hear surroundings when needed Multipoint connection for pairing with two devices Built-in microphone for hands-free calls IPX4 water resistance Up to 11 hours music playback from the earbuds Up to 22 hours total battery life with charging case Quick charging: 5 minutes gives up to 1 hour of playback Bluetooth 5.3 wireless connection Supports SBC and AAC audio formats Compatible with the Sony Sound Connect app Dimensions Earbud weight: approx. 4.6 g each Charging case weight: approx. 31 g Driver unit: 6 mm Bluetooth range: approx. 10 m Earbud charging time: approx. 1.5 hours Charging case charging time: approx. 3 hours