If you're looking for a little mid-year boost on your New Year's resolutions (remember those?), why not grab yourself a Bluetooth smart Scale? They're not super-expensive these days, especially if you can take advantage of a sale like this one-day promotion at Amazon offering 30% or more off RENPHO smart scales. The sale is exclusive to Amazon Prime members as a precursor to Monday's Amazon Prime Day event, but even being on the free 30-day trial is enough to get in on the savings (now and next week).

There are several scales in the sale, but even the most affordable option can track thirteen essential measurements including weight, BMI, body fat percentage, and more. At only $18, it should be a no-brainer addition to your bathroom. All of the data tracked syncs back to your phone using Google Fit, Apple Health, Samsung Health or Fitbit, so you can use it no matter what platform you rock. The more premium offering is the RENPHO Smart Heart Health Scale which tracks the same body composition data as well as a couple of additional heart health data points. It's down to $47 from $70 marking a new all-time low price.

Check out the entire sale and snag one of these highly-rated smart scales before the day — and the sale — ends.

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