I bought these a few months back on Woot, and have been very impressed by them. Work better than expected. Masterfully dedigned. Obviously created by a very smart person. Mine got run over by a semi truck the first day and received no damage what so ever. I fully recommend.
I bought a set, one of 6 worked, 4 had bad switches, the 5th was just dead. The charging case didn’t work, either.