1.Protect your hearing from harmful noises, but also allow you to hear normal conversation.
2.Weak sounds can even be amplisfied, so you hear them better than you would without electronic ear muffs.
3.Immediately compression (impulse noises above 82db compressed but not clipped);
4.Each earcup has separated circuit controlled
5.Soft, wide and foam ear cushions and individually headband provide an even and consistent distribution of pressure around the ears for the best possible comfort.
6.Powered by four A AA batteries (not included)
7.Push botton to control volume.