Large 40mm Drivers: Two advanced dynamic speaker drivers provide superb high-fidelity stereo sound with deep bass response. Experience the fullness of your music and hear more than before. You’ll also get more complete & compelling sound while watching movies and videos 25Hour Playtime: Keep your music playing from morning to night with a 2.5-hour charge of the large 500mAh lithium-ion battery. Switch from Bluetooth to wired mode using the 3.5mm audio cable to continue listening if the battery runs out True Comfort: Super-soft memory foam earpads and adjustable headband ensure optimal fit with reduced pressure for a comfortable listening experience Premium Headphones: Elegant design is combined with high-performance features like powerful 40mm drivers, Bluetooth 5, and a high-capacity battery. A built-in microphone for calls and convenient 3-button control round out this complete personal audio experience