Looking for a good bluetooth mouse with an off button

[imported_nunya]

I'm looking for a bluetooth mouse for use with my laptop but I haven't been able to find any that say they have an off button. Anyone know of a good bluetooth mouse that does? Prefer one that isn't huge but I'd take that over incredibly small, which causes my hand to cramp up. Oh, and prefer it use batteries.

 

[imported_nunya]

Anyone here using bluetooth?