Quartz has properties similar to sapphire, but considerably higher piezoelectric output, so it's rarely used in electrometer circuits.
石英具有类似于蓝宝石的性质，但是其压电输出相当高，所以很少用于静电计电路中。
Description:Stainless steel case and bracelet, sapphire crystal, deploy clasp, water resistant to 30 meters. Swiss quartz movement. Band width, case diameter, case thickness: 33mm, 25mm, 8mm.
不锈钢表壳和表链，蓝宝石水晶，部署扣，防水深度达30米。瑞士石英机芯。频带宽度，表壳直径，表壳厚度：33毫米，25毫米，8毫米。
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