1Shatterproof: Flat watch glass is made of faux sapphire crystal glass, which is not easy to break and is strong and durable. 2Wear Resistant: This watch lens glass has high transparency, smooth surface, high temperature resistance, scratch and abrasion resistance. 3Rounded Edges: The edges of the watch glass lens are polished and rounded, comfortable to the touch and scratch free. CNC cut for precise size. 4Easy To Clean: Round flat watch lens glass is easy to clean and only needs to be wiped clean with a soft cloth after long term use. 5Replacement Parts: Professional watch replacement parts, perfect for watch maintenance and repair, used to replace old or broken watch glass.