Ronten Direct via Amazon offers its Ronten R2 Smart Bluetooth Fitness and Activity Tracker in Black/Blue or Black/Purple for $24.99. Coupon code "XSBKFSDO" drops that to $18.74. Plus, Prime members receive free shipping. That's tied with our mention from a month ago, $56 off, and the lowest price we could find. It tracks steps, calories, distance, and sleep. It includes two silicone bands.