This sport watch gives you several functions to keep track of different key metrics during the workout. It has a screen size of 1.2 inches.
From Amazon
COROS PACE 2 Sport Watch GPS Heart Rate Monitor, 20 Days Long Battery Life, Barometer, Lightweight, Strava, Training Plan, Navigation, Sleep Track, Run, Swim, Bike, Treadmill (Navy - Silicone Band)
365rider
Coros Pace 2 Premium GPS Watch White