Premium High-Fidelity Sound: Excellent over-sized 40mm dynamic driver is capable of reproducing music with high fidelity, stable deep bass, and extended treble, and you get closest to crisp and powerful music world without any loss at any volume. Deliver perfect music effect the way as it was originally heard. Upgrade to 60 Hours Battery Life: Provide you a long-lasting music experience with a built-in rechargeable 840 mAh battery. It isn't always convenient to charge a headset on the go, so you need to be confident it won't run out of power when you need it the most. Engineered with a dual-battery system, This wireless headphone allows you to enjoy up to 60 hours of music time on a single charge. Built For Your Ear: Weighs only 7.5oz (213g)，you will feel nothing on your head. With super soft memory foam earpads around your ears, you can enjoy your music as long as you want without any discomfort feelings. The foldable design allows you to fold up when they're not in use for easy carry and storage. Crystal Clear Calls & Voice Assistance Activation: Offer you ultimate convenience, easily make hands free calls with built-in Mic; Wake up your Siri or Google Assistance just by double press the MFB, no need to reach for your phone, these headphones are your perfect choice for home, online class, study, travel, business meeting, etc. Fast and Solid Connection: This wireless headphones are engineered with the latest wireless BT5.0 technology to bring you an ultimate wireless connection experience. The wireless 5.0 brings you more stable transmission, lower power consumption, stronger signal, making the wireless connection faster and stronger than ever.