Completely hand manufactured and installed in house rite here in the U.S.A.
Earbuds are a pain. And lets face it. Even the best buds on the market don't have great sound clarity.
The "Earthquake" speaker is far superior to the Nitro helmet speaker predecessors. The Earthquake has 2 different layers of sound deadening material to further quench the outside decibel levels to the ear. Its also the only speaker in the industry hard backed with Lexan so it won't fold up when tossing on the old skull bucket. AND the only speaker to have the speaker mounted INSIDE the speaker assembly where all the sound is supposed to be. Installation no additional charge.
Best of all it will be the last speaker purchase you will ever make. Lifetime warranty to the original purchaser. You can't say that with earbuds.