TechRabbit offers the refurbished Garmin Vivosmart HR Activity Tracker in Black for $49.99 with free shipping. That's tied with our January mention of a new one as the lowest price we've seen for it in any condition. (It's also $17 less than you'd pay for a new unit today.) It monitors heart rate, sleep, calories, distance, steps, floors climbed, and activity intensity. Features include a 1" 160x68 always-on touchscreen LCD, Bluetooth, clock function, smart notifications, silicone band, water resistance to 170 feet, and battery life up to five days. It's available in regular size only. Deal ends March 13.

Note: A 1-year TechRabbit warranty applies.