Note: The protective film is designed for flat surfaces. The diameter measurement refers to the film - not the case. BROTECT AirGlass Premium Glass Film, the extra hard and ultra-light display protection for your round smartwatches (diameter: 37 mm)! The glass BRO is new in Europe and features the most advanced and revolutionary display protection technology - AirGlass, exclusively from BROTECT! It is 2 times thinner and 2 times lighter, making it much more flexible than typical glass films on the market. Despite its flexibility, it offers the extra strong, scratch-resistant hardness of glass. The high transparency of AirGlass ensures that the content of your display is shown in sharp detail. At the same time, the ultra-thin film provides 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 BRO to glide onto your round smartwatches (diameter: 37 mm) without bubbles and gently. The buddy for your round smartwatches (diameter: 37 mm) 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! P.S.: Our BRO is made of real glass and is still flexible! See for yourself: Bend the remaining piece of AirGlass on the pull tab! Compatible with round smartwatches (diameter: 37 mm).