Re: new to this site
It takes one AA battery and it's worth the effort to get a rechargable because it only lasts overnight or so. They do send you 2 batteries so the batteries are included. I've been using it off and on (not reliable with it due to other issues) since July and my leg has decreased in size.
Dxd T1 1966, 2001 dialysis, 2002 kidney transplant, 2003 insulin pump, 2008 pancreas transplant