Description Color: black and white 1. 【BLUETOOTH 5. 0 & TWS】 - Use the most advanced Bluetooth 5.0 technology. Provides stereo sound during the call. Also own a fast and stable transmission without tangles. 2. 【ONE-STEP PAIRING】- The automatic system offers you hassle-free pairing and connection to your devices. All you have to do is take them out of the case and turn on the left and right earbuds. Two earbuds will be connected automatically, put on and you can immerse yourself in your music world. 3.【PORTABLE CHARGER TIME】The charging case can hold about 4 full charges, and each charge works about 4-5 hours. After charging about 1 hour, you can let the earbuds battery charge from empty to full 4. 【Latest Face Recognition Technology to Control Pause/Play】 Stop using infrared recognition technology to control music pause and play. Bluedio introduces the latest face recognition technology to control music pause/play. She is more stable. If you take the RIGHT earbud off your head, the music will pause. When you wear it, the music will keep playing. 5.【COMFORTABLE FIT】: The simple yet elegant design provides users with overall comfort. Bluetooth 5.0 design provides a comfortable and secure fit for most ears. A feeling of comfort and safety in everyday use.