Here’s a deal and a half from Groupon. That’s right, Groupon, the folks who bring you half price restaurants and dance lessons and pottery making classes.

For $39, you can get a Motiva Heart Rate Watch that sells on Amazon for $64.22 and retails for $119.99. For $25, you can get a MIO Heart Pro watch that sells on Amazon for $42.03 and retails for $69.99.

Reviews are decidedly mixed, but if you’re just looking for something quick to use with your Wii workouts that doesn’t require pesky chest straps, you can’t go wrong with this. But jump on it while you can, as the dreaded “limited quantity available” message is already up!