Feature: 1. VARIETY OF SIZES: Watch back cover protective film set includes a total of 170 pieces of different sizes made of excellent quality PVC material, ensuring a perfect fit for various watch models. 2. PREMIUM PE MATERIAL: Crafted from transparent, scratch resistant PVC material, the protective film maintains the original beauty and clarity of your watch cover while providing against scratches. 3. AUTO ADHESION WITHOUT RESIDUE: Designed with quality anti static thin film, these protective films are easy to apply and remove without leaving any sticky residue, safeguarding your watch glass from wear and tear. 4. MULTIFUNCTIONAL: Not only does this protective film prevent scratches between watches, but it also prevent watch glass from daily wear and tear, dust, and scratches, ensuring long lasting safeguards for your timepiece. 5. HIGH TRANSPARENCY: With high transparency for clear display of your watch and excellent stretchability and puncture resistance, this protective film offers robust safeguards, making it an essential accessory for prolonging the lifespan of your watch. Specification: Item Type: Watch Back Cover Protective Film Material: PVC Sizes Included: 18mm / 0.71in: 24pcs 20mm / 0.79in: 20pcs 22mm / 0.87in: 20pcs 25mm / 0.98in: 16pcs 28mm / 1.1in: 16pcs 30mm / 1.18in: 14pcs 32mm / 1.26in: 10pcs 35mm / 1.38in: 10pcs 38mm / 1.5in: 10pcs 40mm / 1.57in: 10pcs 42mm / 1.65in: 10pcs 45mm / 1.77in: 10pcs. Package List: 170 x Watch Back Cover Protective Film Note: Attention: Clean the watch case back. Measure the back cover of the case, the sticker should not exceed the side of the back cover, so that the sticker can be used for a longer time