[High fidelity stereo] Call sound quality is clearer. The high fidelity stereo of the wireless headset provides a wider sound field and a shocking low frequency experience. [Smart Touch Control & Comfortable Fits] You can easily control answering or hanging up calls, playing or pausing, turning the volume up or down, switching songs, and more without operating your phone. [Advanced Bluetooth Chip & Automatic Quick Pairing] After the first connection, the charging case will be connected to your device as soon as it is opened. [Fast charging and long battery life] Bluetooth wireless headset supports fast charging. Bluetooth: V5.1 + EDR, HIFI3.0, charging time 2H, battery life 20H, standby 400H, charging compartment battery capacity 300MAH, earphone capacity 30MAH, sound frequency 110db at 1KHZ, working distance 10 meters, connect immediately after opening the lid. You can enjoy music anytime, anywhere. [LED digital display & colorful design] The power LED of the charging case and two earplugs is accurately displayed, allowing you to keep abreast of the power status of the wireless earplugs and charging case.