Dolaer Noise Cancelling Over Ear Headphones EL-B4 Bluetooth Wireless/Wired Headphones with Microphone, Deep Bass Foldable Comfortable Headphone for Online Class, School, Home Offic

♬Dual powerful 40mm sound stage drivers deliver true-to-life audio with rich bass that's just like the real thing. Engineered, noise cancellation -20dB. It could prolong the lifetime of the battery and offers more real sound. ♪(Comfortable Wearing and Ergonomic Design) The headband is adjustable that can be longer or shorter and loose or tight,the over-ear Headphones memory-protein earmuffs is made in Germany, which designed to disperse pressure and heat build-up, combined with the soft leather headband to gives you maximum long-term comfort & superior isolation. make sure that the ear is snug around your ears for a better sound experience and immersed in the full sound.and headband is adjustable ♬Built-in rechargeable battery with a full charge of 1-2 hours enables your beats to go on for a whopping 10-30 hours of playtime. You could also use this Bluetooth headphone as a wired headphone with the provided audio cable plugged into your earphone jack so the headphone will never po