Apple Watch SE has the same larger display size Retina display as Series 6, so you can see even more at a glance. Advanced sensors to track all your fitness and workout goals. And powerful features to keep you healthy and safe. The Sleep app lets you set a bedtime routine and track your sleep. And with cellular service, you can go without your phone. It's a lot of watch for a lot less than you expected. Wireless service plan required for cellular service. Contact your service provider for more details. International roaming is not supported.