About this item High Definition Stereo Headphones - Experience superior sound quality with high fidelity deep bass and crystal clear treble. Enjoy deep, accurate bass response and an extended frequency range. Lose yourself in immersive music even at the lowest volume levels. 40 Hours Long Playtime with 6 EQ Modes - Equipped with 6 EQ modes, effortlessly switch between Bass/Jazz/Voice/Rock/Pop/Classic sounds, each providing CD quality audio. With a 500mAh battery, enjoy up to 40 hours of playtime and fast charging in just 2.5 hours. This versatile design allows you to switch to wired mode using the included 3.5mm audio cable for non-stop music enjoyment. Bluetooth and Built-in Microphone - The upgraded Bluetooth chip ensures clear hands-free calls and an efficient, stable connection. Experience true wireless freedom with easy pairing. Simply long-press the power button to enter pairing mode for a fast connection to Bluetooth devices. Easy to Carry Foldable Headphones - These headphones