This neckband Bluetooth headphone has a built-in 800mAh battery with an upgraded chip. When fully charged, you can play and enjoy music for a long time. The new generation of Bluetooth 5.2 chip reduces power consumption, smaller size, more stable processing power, lower power consumption and longer battery life. Equipped with a HiFi large moving coil and a composite diaphragm design, each song/movie scene can be better analyzed. This Bluetooth headset is equipped with an LED digital display, you can monitor the remaining power-in real time, without the embarrassment of sudden power failure. Adapting the latest noise technology, effectively reducing background noise, creating a stable and clearer calling environment.