High-Quality Sound: Equipped with stereo sound enhancement technology, high school and low-frequency enhancement. More detailed sound, a stronger sense of spatial surroundings New Bluetooth-compatible 5.4 Technology: Faster transmission and more stable signal, low latency ANC+ENC Noise Reduction: -25dB noise reduction ratio, effectively block external noise Intelligent LCD Full-color Touch Screen: The charging box has an LCD full-color touch screen to improve user experience Personalized screen wallpaper: Designed with personalized screen wallpapers, you can switch at will Specifications: Bluetooth-compatible version: 5.4 Model: WS-05 Play time: 4H Driver unit: 13mm Frequency response: 20Hz-20KHz Earphone battery capacity: 30mAh Charging case battery capacity: 300mAh Rated power: 5MW Charging time: 2h Package included:1 x Pair of Bluetooth-compatible Earphones 1 x Charging Case 1 x Charging Cable 1 x English and Chinese User Manual