GearBest offers the Zeblaze Crystal Smartwatch in Black or White for $39.99 with free shipping. That's $9 under our February mention and the lowest total price we've seen. (It's also the best deal now by $16.) It's compatible with iOS 8.0 or newer and Android 4.4 or newer and features a 1.5" curved tempered glass display, leather strap, stainless steel case, Bluetooth 4.0, sleep monitor, pedometer, realtime heart rate monitoring, and IP65 water resistance. Deal ends April 14.

Note: This item ships from mainland China and may take three to four weeks to arrive.