Northwest Outdoor via eBay offers the refurbished Garmin Vivosmart HR Activity Tracker in Black for $69.95. Apply coupon code "P20MEMDAY" and check out with PayPal to cut the price to $55.96. With free shipping, that's $4 below last week's refurb mention and the lowest price we've seen. (It's the best deal for a new unit today by $39.) It monitors heart rate, calories burned, distance traveled, steps taken, stairs climbed, and activity intensity. It features a 160x68 touchscreen LCD, smart notifications for calls, texts, and e-mails, an alarm, and a five-day rechargeable battery. Deal ends May 29.

Note: This coupon can only be used once per PayPal account within a single transaction. A 1-year Garmin warranty applies.