Specification AgeRangeDescription : Adult Brand : Pissente BulletPoint1 : Clear Crystal Material: This glass lens is crystal clear, made to replace the watch crystals for wristwatch or pocket watch. With thickness of 1.2mm/0.05in, which makes it more convenient to fit the watch frame perfectly,Watch Lens BulletPoint2 : 21Pcs Lenses: The Round Flat Watch Crystal Glass Package including 21pcs lenses in total, includes lenses with different specifications, from 35mm to 45mm,Flat Glass Lens BulletPoint3 : Scratch Design: The Round Flat Watch Crystal Glass is made of high qualiy material of mineral glass, which makes it and have high reliability. Round Flat Watch Crystal Glass is scratch resistant,Mineral Glass Lens BulletPoint4 : Material: : Flat Watch Glass Lens are made of high qualiy mineral glass material, which makes it and have high reliability, professional manufacturing, fine craftsmanship and high accuracy, provide excellent performance,Flat Watch Glass Lens BulletPoint5 : Portable Size: The watch pulse meter only needs to install a 9V battery to use. Light, compact and easy to transport ClaspType : Tang Buckle Color : silver CompatibleDevices : Watch Department : unisex-adult ExternallyAssignedProductIdentifier : 7049263761078 ExternallyAssignedProductIdentifier1 : 0782323632327 ExternallyAssignedProductIdentifier2 : 782323632327 IncludedComponents : Base, Balance Wheel Holder, Needle Punches, Connector ItemName : 21pcs 35‑45mm Flat Watch Glass Lens Set Smooth High Temperature Thickness 1.2mm Round Mineral Lens Replacement for Watchmaker Repair ItemPackageDimensions_Height : 12.9 centimeters ItemPackageDimensions_Length : 5.1 centimeters ItemPackageDimensions_Width : 9.3 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : watch-repair-tools Lifestyle : Fashion Manufacturer : Pissente Material : Stainless Steel MinimumOperatingVoltage : 9 volts ModelName : ZJchao80r1cfdxwt ModelNumber : Pissenteu9rfm42bw1 NumberOfItems : 1 PackageLevel : unit PartNumber : Pissenteu9rfm42bw1 Pattern : Solid PowerSourceType : Battery Powered ProductDescription : Feature: 1. Package including 21pcs watch glass lenses in total, includes lenses with different specifications, from 35mm to 45mm. 2. With thickness of 1.2mm/0.05in, which makes it more convenient to fit the watch frame perfectly. 3. Highly transparent, smooth treatment, no scratches, smooth and high temperature resistance. 4. watch crystal lens are made of high qualiy material of mineral glass, which makes it and have high reliability. 5. Professional manufacturing, superb craftsmanship and high accuracy help to provide the best performance.