Features: Seamless Wireless Connectivity: Experience the freedom of BT 5.3 technology with our headset, allowing you to enjoy your favorite music or take calls without the hassle of tangled wires. AUX IN Wired Connection: In addition to BT, our headset also supports AUX IN, allowing you to connect it to a wide range of non-BT devices such as laptops, tablets, and gaming consoles. Comfortable to Wear: The adjustable headband ensures a perfect fit for all head sizes, while the soft and breathable ear cushions provide long-lasting comfort. Foldable ear cups make it easy to store and carry. Long-lasting Battery Life: Built-in 400mAh lithium battery provides 14 hours of music playback or talk time. Say goodbye to frequent charging and enjoy your favorite tunes on the go. Superior Sound Quality: Immerse yourself in high-quality audio. Whether you're listening to music, watching movies, or making calls, it delivers crystal-clear sound, ensuring an immersive audio experience. Note: When in AUX-IN mode, it is an ordinary wired headset and buttons cannot work. Specifications: BT Version: 5.3 Transmission Range: About 15m (no obstacle) Impedance: 32 Frequency Range: 20-20KHZ Drive Unit Diameter: 40mm Battery Capacity: 3.7V 400mAh Working Time: about 14 hours Charging Time: about 2 hours Charging Port: Type-C Material: PC+ABS Color: Beige gold, titanium black, silver white, mint green, coral red, navy blue (Optional) Item Size: 19.7*18.5*7.6cm/7.75*7.28*2.99in Package Size: 20.5*19.5*8.5cm/8.07*7.67*3.34in Package Weight: 588g/20.74oz Package List: 1 * Headset 1 * Charging Cable 1 * 3.5mm Audio Cable 1 * User Manual