FUNK Over-ear HiFi ANC Noise Reduction Wireless Headphones, with Microphone 1. Bluetooth 5.4 chip for low power consumption, more stable, and faster sound location tracking. Light as a wing, with no perceptible lag, enjoy the ultimate in mobile gaming. 2. High-precision PET diaphragm, 40mm precision bio-diaphragm, with larger amplitude and faster response, delivering a concert-quality music experience. 3. Lightweight and weightless, fits snugly: Memory steel bars and a leak-proof, snug fit ensure high-quality sound with richer, deeper sound. 4. Foldable for minimalist storage: The foldable design allows for easier storage without taking up too much space. 5. Unique joystick buttons: Breaking away from traditional button design, this retro, heavy-duty design adds a touch of interactive functionality that will keep you hooked. 6. Spatial sound: Equipped with 3D sound field technology, it delivers cinematic surround sound, fully enveloping you for an immersive, three-dimensional listening experience. Specifications 1. Bluetooth Version: V5.4 2. Transmission Range: 10 meters 3. Material: ABS 4. Battery: 3.7V, 800mAh 5. Playtime: 80 hours 6. Speaker Size: 40mm Packing List 1. Bluetooth headset x 1 2. Charging cable x 1 3. User manual x 1