If you want to protect your Apple Watch Ultra (49mm) then tempered protective glass from the reputable manufacturer Hofi is a good choice.

This Hofi tempered glass has these features, among others:

• Excellent protection against scratches and tears.
• Superb protection of the screen in the event of loss of the watch.
• Made with a strength of 9H, which is nine times harder than regular glass.
• Super thin tempered glass with a thickness of just 0.2 mm.
• 'Anti-fingerprint' technology keeps fingerprints, dust and other impurities from the screen.
• Safe 'anti-explosion' function - the protective glass will never be able to shatter and be dangerous.
• Screen cleaning kit before mounting included.

By using protective glass, you greatly minimize the risk of your watch's screen being scratched, damaged or scratched.