Today only, Jan 21, 2017, Meh has the Barska Heart Rate Monitor with Chest Strap, model no. GB11498 or GB12166, for $8 (currently $39.89 on Amazon) for a limited time. Shipping adds $5.

The Barska Heart Rate Monitor bundle features a strap, readings for continuous heart rate, target zone, calorie counter, digital clock, calendar, alarm, stopwatch, and is water resistant up to 99 feet.