Earbuds with instant translation and translation into 135 languages. Multiple operating modes: - Synchronous translation; earbuds and phone are used together for real-time translations. - Automatic interpreter that detects and automatically translates spoken language. - Dual earbud mode allows two people to use one earbud to conduct instant conversation translation. With automatic Bluetooth synchronization, call and music control. Compatibility with the exclusive EarJoy app for iOS and Android. Bluetooth connection. Battery 40 mAh / Charging station 200 mAh.