If you’re trying to keep an eye on your blood pressure (can’t imagine why!), Amazon will sell you this Omron 7 Series electronic monitor today for $49 after clipping the 20% coupon.

In addition to storing 120 readings on the device itself, this monitor can connect to your smartphone over Bluetooth, and sync all of your data to a free app (as well as Apple HealthKit), making it easy to track of your progress over time.

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Not to stress you out, but we aren’t sure how long the $10 coupon will be available, so don’t delay.