Lusee 3 Pack 35mm Round Tempered Glass Screen Protector for Smartwatch, 9H Hardness HD Clear Anti-Scratch 2.5D Film, Bubble-Free Auto-Adhesive Universal Fit for Flat Screen Smart Watches

Excellent product! I have had this on my watch for almost 6-7 months now, if not more and not a single scratch has appeared nor has it cracked. Despite wearing my watch daily, it's comfortable and the protector has done it's job perfectly.

Perfect fit for my casio ECB-2000NP-1A Edit - starting to peel off. Picture attached Second edit - they were kind enough to send me another set 1mm smaller, this has worked perfectly on first try. Let's hope it stays. First class customer service

Very good product

Fits like a glove easy to put on

Don't bother, fitted to garmin fenix 3, goes on all foggy, after one run it was sliding off, complete rubbish. Can't return either due to Amazons labyrinth return system so waste of money

Superb, top rated

Okay item. Didn’t last on the watch for very long, quality isn’t great.

Fantastic - not just for smart watches. If you have a non smart watch that doesn’t have a sapphire crystal these do a great job of protecting from every day scratches. Obviously like a cheap phone screen protector these will eventually scratch and even crack themselves but the point is, your watch crystal is undamaged and you pop another one on. A lot of the negative reviews seem to be from people not measuring correctly or from thinking these will adhere to a domed crystal - you need to have a completely flat crystal for these to work. But if you know the size you need and your crystal is flat these are a fantastic way of keeping your watch in perfect condition. Will buy again.