These are great. I have had about three weeks now, and have only had to charge once. I keep them
(and the support items) in a small change purse attached to keychain. The dice don't move much.
The routines you can create are endless.
My Quickie routine: Put three dice out there,
have spectator select ONE, and roll it and don't look at the number. Cover with hand. Then hide
other two. You reveal color and the number on the die (which they don't even know)