Apple Watch SE 3 is packed with essentials like sleep score, Always-On display, Activity rings, and more. All for a great value. Apple Watch SE 3 is packed with health, fitness, connectivity, and safety essentials—all for a great value. Track your sleep score. Get richer health insights in the Vitals app. Stay active with a wide range of workouts. Save time with fast charging. See your info at a glance with the Always-On display. And still get all-day, 18-hour battery life.