The Samsung Galaxy Watch Ultra is Samsung's most complete smartwatch. Thanks to the rugged design, the Galaxy Watch Ultra is waterproof and can withstand rough circumstances. The square watch case looks different than that of other Samsung smartwatches. The battery lasts 2 to 3 days. You can always be reached on your Watch thanks to 4G, even when you don't have your smartphone with you. At Coolblue, you can buy the Samsung Galaxy Watch Ultra in gray, silver, or white.