Powerful speaker with the BT 5.0 technology. High quality built-in microphones software and HD sound technology, offer you high fidelity stereo music with deep bass and crystal clear speech when you listen to music or watch movies. BT headphones can work well both in wire and wireless mode. Battery can be used 20-hours music time/ talking time in a single charge for wireless mode. You can also use it as a wired headphone with the provided audio cable so the headphones will never power off. Comfort with the professional protein earmuffs, More durability and comfort, enjoy high-quality, long-listen comfort, skin texture, light weight, comfortable around-ear fit you can wear all day long. Gentle Reminder: please take off the headphone every 2-3 hrs to get your ears relax, in order to get better hearing enjoyment, and keep the head comfortable.