Amazon has the Amazfit T-Rex Pro Smart Watch (Black, W2013OV1N) for $120 with free shipping. List price: $160. Features 1.3" HD AMOLED polycarbonate display, 100+ sports modes, 328 feet water-resistant, 96 hours salt spray resistance, GPS, 18-day battery, Amazfit OS (compatible with Android, Apple iOS).

Has good Amazon Reviews.