98% Accuracy Simultaneous, Translation in 0.5 Sec: Experience lightning-fast and precise translations in your multilingual conversations with the earbuds, fueled by the world's top translation engines Long-term battery, with long-lasting use time Offline mode: Can translate without network, support Chinese, and English.Japanese, Korean, Russian, German, French, and Spanish real-time offline voice translation Indulge in Uncompromising Audio Quality with the High-precision Noise Reduction Specification: Model: B66 Bluetooth Version: Bluetooth 5.1 Playtime: 4h Charging time: Earphones:1h; Charging case: 1.5h Battery Capacity: Earphones:80mAh; Charging Case:400mAh Charging interface: Type-C Four Translation Modes for Different Scenarios: Touch Mode: Two people wearing headphones together, click on the headphones for real-time translation, suitable for acquaintances who are willing to wear your headphones. Speaker Mode: One person wearing headphones and one person holding a phone, suitable for strangers who are not convenient to wear headphones Off-line Mode: No online translation is available, supporting real-time offline voice translation in Chinese, English, Japanese, Korean, Russian, German, French, and Spanish Free Talk Mode:Two people each wear one earphone, translate in real-time, release their hands, and communicate freely