Impressive sound quality is the ultimate goal : this item is passive noise isolating, an additional factor of sound quality, it is better than anc. the closed-back design provides immersive hi-fi sound with csr chip and 40mm driver together
built to stay comfortable: the memory-protein ear cushion simulates human skin texture, ensuring lasting comfort. the stainless steel slider and softly padded headband allows you to find the perfect fit without constraint and provide excellent durability
never power off, both wireless & wired: 1. the wireless mode: a built-in 450mah battery provides up to 13-hr music time/15-hr talking time in a single charge; 2. the wired mode: you can also use it as a wired headphone with the provided audio cable so the headphones will never power off
hands-free call & built-in mic: please note: the microphone in headphones provide a quick and stable connection with your bluetooth enabled devices like cell phones, tablets, pc, tvs