Amazon's Halo View is a fitness tracker that sports a color AMOLED display (Amazon does not disclose the size, but it looks to be around 1.5-inch), haptic feedback, optical heart rate monitor, and skin temperature sensor.

Amazon Halo View photo

The Halo View costs $79.99, with an optional $4 monthly subsciption for many added features such as body composition, activity intensity, fitness and nutrition programs and more.

OLED type: 


Kyulux - Hyperfluoresence OLED emittersKyulux - Hyperfluoresence OLED emitters