[legion]

I have two Dremels: a battery-powered one and plug-in one. That plug-in one is superior in every way.

I can get an hour of use out of the battery one if I use two batteries. It will go up to 15,000 rpm according to the speed settings, but I doubt in practice it will stay there for long. It was cheaper than the plug-in one, and I bought it 10 years ago when I was a broke recent college grad and needed one badly. I paid $40 for it at the time.

I also paid $40 for the plug-in one. Lowe's was having a sale on them after Christmas a few years ago. It will go up to 30,000 rpm, and came with a host of attachments and bits. I think it was normally around $80. I flat-out don't use the battery one anymore, the plug-in one is so much better.