While not without its flaws, Garmin’s Vivofit fitness tracker is unique in offering a truly waterproof design, the ability to pair with a heart rate monitor, and most notably, over a year of battery life via a standard watch battery.

When it launched a couple years ago, the tracker and an optional chest strap heart rate monitor would have set you back $170, but now, you can get both for just $40 with promo code FIRST10K.

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