With the Apple Watch SE, you get all important functions of an Apple smartwatch. You can see your messages, heart rate, and activity. The Apple Watch SE (2025) is the latest Watch SE. You can buy the Apple Watch SE (2025) in 40 and 44mm at Coolblue. Try on the Watch in the store and find out which size watch case suits you best. Measure your wrist and choose the right size watch strap. With the Apple Watch Cellular, you're always available. Even when you don't have your iPhone with you. You need an eSIM subscription from your provider for this.