Damn, I was hoping it was actually a big battery pack! Could come in handy for some of the things I do.@WatchMeSoar:
I was referring to the "Vault-Tec Subpac M2 Wearable Tactile Audio System" A $400 vibration pack. Basically re-hashing a very old product. Sure they added Bluetooth, and a battery. But for $400 it better be able to give me a bruise from getting hit by a super sledgehammer.