Q:How to switch between English/Chinese versions?(Default English version) A:1. Take out the headphones, disconnect the Bluetooth connection, and keep the headphones turned on 2. Quickly click the headphone button three times to complete the language change Tips: Both headphones require the above operation Product Description New TWS wireless headphones let you indulge in the music world. 1.The new upgraded Bluetooth 5.3 chipthe wireless connection is faster and more stable. 2.Open earbuds charging case to automatically boot and connect to the phone,automatically shut down and charge when put earbuds into the charge case,easy to use. 3.After N time of adjustments by a professional tuning teamthe interpretation of the human voice in the mid and high frequencies is enhanced.The stereo HIFI sound effect allows you to sing on the scene and output the original sound with high fidelity. 4.It can accurately identify and effectively suppress external noise during a call,with clear voice even in a noisy environment,make your call smooth. Product Specification: Noise reduction function: Support TWS single / binaural separation mode: Support Siri Smart Voice: Support Bluetooth-compatible Transmission Distance: 10m (Barrier-free) Bluetooth specification:V5.3 Battery capacity of the headset:60MAH Battery capacity of the storage box:400MAH Play time:24h Charging time:1.5 h Charging port:Type-C Waterprof :IPX6 Note: 1. Please read the user manual carefully before use. 2. If you receive a defective product or have any questions during use, please feel free to