Miravia Item identifier: 1368047436793880-2085682907650072 [Bass Sound & Equalizer Function]: Powerful 57mm stereo driver and advanced Bluetooth 5.0 chip designed to deliver excellent sound quality. High-fidelity bass and pure treble let you enjoy amazing music even at lower volumes! During music playback, you can choose from six types of sound effects by clicking the function button: 3D Sound, HD Voices, Panoramic Surround Sound, Bass Sound, Concert, HiFi. [Powerful Functions]: Wireless headphones (approximately 40 hours) and wired headphones (unlimited time). When the battery runs out, you can use the 3.5mm audio cable to switch the product to wired mode to enjoy music. Supports FM radio and SD card. You can listen to FM radio with headphones or insert an SD card into the SD card slot and listen to music. The built-in microphone on these headphones supports HD hands-free calls. [Foldable Design]: The foldable earcups save space. They adapt to the size and shape of your head or ear for a snug fit, ensuring you don't miss any sound. To maintain high-quality sound and comfortable wear, remove the headphones every 1 or 2 hours to give your ears a break and protect them from environmental disturbances. [Comfortable and Ultra-Lightweight]: These Bluetooth headphones with ear hooks feature ultra-soft ear cushions and an adjustable headband for lasting comfort. Suitable for all ages. The leather-like texture of the ear cushions ensures long-lasting comfort. The soft, padded headband fits a wide range of head sizes. They are the best choice for wireless headphones that can be worn for extended periods. [Big Bass]: Exclusive Bass 3.0 technology combines with the ultra-high resolution of Bluetooth 5.0 audio and is enhanced by a powerful 10mm audio driver to deliver deep bass and 43% more bass.