TENS?
My son mentioned that one of our instructors used one on him while we were in school. I'd forgotten about that!
An MT-friend of ours, and the one we trade off with, used one on my husband yesterday, because we were rear-ended the other day and now he's having all sorts of terrible spasms that nothing else is helping with. She'd forgotten she had it, she said! This is what got me to thinking, maybe we should invest in one. Even if we don't/can't use it for clients, it could really help his recovery (and other stuff).
Squashy, I'd love to hear more about your unit, if you want to PM me the info, please! Thanks!