The earmuffs are designed with a 15-degree inclination; the head beam can be stretched to a large range, and the earmuffs are made of soft leather which all provide a comfortable wearing experience. Qualcomm aptX HD audio decoding format, which supports both 16bit and 24bit audio signals with a sampling rate of up to 48KHz. This provides a natural sound, rich in details and quality. Qualcomm CVC8.0 accurately picks up voices and eliminates background and environmental noise, leading to clearer communication during calls. 40mm NdFeB magnetic moving coil units provide a large sound field with powerful bass and enriched voice notes, producing a dynamic sound. Featuring Bluetooth V5.1 and upgraded Qualcomm QCC3024 chipset, the power consumption is lowered resulting in longer playback, and faster and more stable transmission. The built-in lithium battery has a large capacity which can provide up to 55 hours of wireless listening time. EDIFIER CONNECT provides a more intelligent and personalized listening experience. It can expand the functions of your headphones so you can select a different sound mode, customize the headphone pairing name, etc. Support connecting with two Bluetooth devices simultaneously. Easily switch between work and entertainment.