Specifications: Bluetooth version: 5.4 Charging interface: Type-C interface Charging compartment capacity: 300mAh Transmission distance: 10M Charging time: about 1 hour Package Includes: 1 Set * Translation Headphones Note: 1.Due to manual measurement, lighting shooting reasons and the real thing will be slightly different, please understand. 2.If you are not satisfied, please contact me immediately through Amazon! 3.If you have any questions after receiving our products, please feel free to contact us, we will deal with it for you as soon as possible and give you a satisfactory answer.