This Bluetooth translator earbuds offer real-time and two-way translation in 144 languages, you can easily switch the translation mode to enhance your communication efficiency in different situations. Features: Offline Translation Support: supports languages including Chinese, English, French, German, Japanese, Russian, Spanish, Korean (requires app and in-app payment). This translation earbuds supports online translation in 144 languages (free), and the accuracy rate of 97 percent. The translation earbuds are designed to be comfortable to wear and cause no discomfort even after prolonged use. The language translator earbuds offer versatility and convenience for work and everyday life, combining translation, music playback, and phone calls. The translator earphones are equipped with a charging indicator to know the battery power status at any time. Each earbud built in 80mAh battery and the charging case built in 400mAh battery, the working time is up to 7 hours and standby time is about 80 hours. It is suitable for use in meetings, travel, personal assistance and other occasions. Specifications: Material: ABS Color: Black Bluetooth Version: 5.1 Transmission Distance: 10 M Battery Type: Each Earbud: 1 x 80mAh Battery Charging Case: 1 x 400mAh Battery Charging Time: 2 Hours Working Time: 7 Hours Standby Time: 80 Hours Power Supply Method: USB Charging Cable ( Power Adaptor Not Included ) Online Languages: 144 Languages App Compatibility: Android 5.0 and above, iOS 9.0 and above (iPhone 6S and newer). Earbud Size(LxWxH): 4.6 x 5 x 1.5 cm(Approx.) Charging Case Size(LxWxH): 8.5 x 6 x 2 cm(Approx.) Package Contents: 2 x Earbuds 1 x Charging