So this thing is really pretty cool and I wish I could use it in the particular shop I work in. The main resson i cant use it is because the guy i work for is relly bad of hearing to begin with and during the short time I wore it to try it i had to remove it any time he was talking to me , which was abi ut every 30 seconds lol. On top of that my main task is to be cleaning it up, which as you may know involves alot of stooping down and getting stuff out from under things. Which is pretty awkward kinda with the helmet on . B ow as far as the respirator part, it works great. It really works so good that I would deal with the minor maneuverability issues to be able to breath as well as I could in the shop, and being outside the shop after not breathing in all the dust the whole time...it really top of its class in PPE. Long battery life. They say 8 hours but i havent used it that long yet. Nice string face shield too and it comes with a thin guard kinda like a screen protector. I would return it to Amazon but they won't accept it. So my loss is your gain. Hopefully someone can get it that really needs it. Will consider some trades bu they gotta be really cool. At 250.00 theres also room for resale. Hit me up with an offer, the worst I can do is say no.