From the watch watch material, vintage watches glass plastic watch will not be broken, but mineral crystal and sapphire glass surface now general is very easy to have broken the phenomenon.

从手表表蒙材质上来看，老式手表的塑料玻璃材质的表蒙不会出现破碎的情况，但是矿物质水晶以及现在通用的蓝宝石玻璃表面却很容易产生破碎的现象。

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From the watch watch material, vintage watches glass plastic watch will not be broken, but mineral crystal and sapphire glass surface now general is very easy to have broken the phenomenon.

从手表表蒙材质上来看，老式手表的塑料玻璃材质的表蒙不会出现破碎的情况，但是矿物质水晶以及现在通用的蓝宝石玻璃表面却很容易产生破碎的现象。

youdao