you get a Protective film for Samsung Galaxy Watch 4 (40mm), which protects the screen. You get excellent protection against scratches, knocks and scrapes. 

When you use this Samsung Galaxy Watch 4 (40mm) Protective Film you retain the full touch function as well as all screen color tones. The black rounded edges blend in with the design of the watch, making it extremely discreet to wear. 

Using the Samsung Galaxy Watch 4 (40mm) screen protector is a great idea if you want to maintain the value of your smartwatch.