Matte Beige Bluetooth Headphones with Clear Hands-Free Mic. 40mm large-aperture drivers deliver crystal-clear audio with deep bass and crisp treble, bringing immersive music enjoyment. 3 EQ modes are freely switchable between balanced, bass-boost and high-fidelity sound, restoring CD-level listening experience. 52H ultra long playtime supports up to 52 hours of continuous playback in Bluetooth mode, fully meeting daily commuting and long-distance travel needs. Equipped with Bluetooth 5.3 technology, it features stable transmission, ultra-low latency and seamless connection with smartphones, PCs and other devices. Lightweight design with soft memory protein earpads and adjustable headband, no clamping pressure even after long hours of wearing. Unique ergonomic ventilation design effectively reduces stuffiness, bringing a comfortable non-fatigue wearing experience for all head shapes. Built-in high-sensitivity microphone supports clear hands-free calls, effectively filtering background noise for smooth voice communication. Foldable design is easy to carry, perfectly adapting to home office, gaming, travel and other usage scenarios.