Note: The protective film is designed for flat surfaces. The diameter mentioned refers to the film - not to the case. BROTECT AirGlass Matte Premium Glass Film, the ultra-hard, anti-reflective, and ultra-light display protection for your wristwatches (round, ø: 33 mm)! The matte glass BRO features the most advanced and revolutionary display protection technology - AirGlass, exclusively from BROTECT! The matte AirGlass is significantly thinner and lighter than typical tempered glass products on the market. This makes it much more flexible while still providing the same scratch-resistant hardness of glass. The surface of the glass film is matte, which reduces annoying reflections on your display. At the same time, the ultra-thin tempered glass film offers a unique touchscreen sensitivity. Additionally, the BRO has an anti-fingerprint coating, so dirt and fingerprints on your display have no chance and can be easily wiped away. The flexible adhesive layer allows the glass film to glide onto your wristwatch (round, ø: 33 mm) without bubbles and gently. The companion for your device is carefully manufactured by our expert team in Germany. The display protection film is therefore Made in Germany, and you receive your protective film directly from us. Enjoy it! P.S.: Our BRO is made of real glass and is still flexible! See for yourself: Bend the remaining piece of AirGlass at the pull tab! Compatible with wristwatches (round, ø: 33 mm).