There's a horde of fitness-centric wearables out there competing for real estate on your wrist, but few track as many aspects of your life as the Withings Pulse O2, and you can own one for just $80 today.

In addition to the standard step, sleep cycle, stair, and calorie tracking, the Pulse adds in a high-end heart rate monitor and even a blood-oxygen sensor to build a more complete picture of your day. Plus, you can choose to clip it onto your clothes, or wear it as a wristband, making it one of the most versatile trackers out there.

The Pulse retails for $120, and has never dipped below $100 on Amazon until today. It's a Gold Box deal though, so the price is only available until midnight PT, or until sold out. If you own one, let us know what you think of it in the comments. [ Withings Pulse O2, $80]

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