Apple Watch SE 3 40mm Starlight Aluminium Case GPS Sport Band (S/M) [2025]Apple Watch SE 3 is packed with health, fitness, connectivity and safety essentials plus its great value. Track your sleep score. Get richer health insights in the Vitals app.[1] Stay active with a wide range of workouts. Save time with fast charging.[2] See your info at a glance with the Always On display. And still get all day, 18 hour battery life.[3] Key Features Health Essentials Temperature sensing[4] enables richer insights in the Vitals app[1]