JAZZA ANC J3 Active Noise Cancelling Over-ear Headphones，18H Battery Time， Black， Wired[Product Information]- Built-in noise reduction circuit inverting precision ANC， it can effectively cut off 85% of the background noise dedicated high-quality noise-style 40mm diameter driver unit， to ensure the highest quality 3.7v lithium ion battery，it was recharged without replacing batteries two modes of operation， to choose noise reduction state (subject to a battery)， the normal state (without battery) ，it was easy to switch earmuffs imported sponge， soft and comfortable， long wear without fatigue
