Watch crystals are usually divided into three types, plexiglass, mineral glass and sapphire glass. Although ceramic has the greatest scratch resistance, it is easy to be broken. Plexiglass can easily get scratched, but has a better impact resistance. Sapphire has the best scratch resistance, but the material is crisp, fear of being collided. Mineral glass is somewhere between them.

To avoid your sapphire glass face getting scratched, don’t let it friction with diamond, millstone, sandpaper, nail file and concrete wall. Allow it to contact with sharp and hard objects can also cause damage to the glass face. Besides, you’d better check your watch band at regular, otherwise, the watch glass can be broken to pieces once your watch fall to the ground.

Note: When buying watches, somebody frictions the watch glass face on the floor or scratches it with some hard objects to test hardness of the watch glass. I do not recommend to do so.

If you are going to store your quartz watch for a long time, you’d better take out the battery from it.

As you know, almost every quartz watch uses silver oxide battery, this battery will discharge automatically even the watch is not working, the size of self-discharge rate is related with the temperature, the higher the temperature, the greater the self-discharge rate.

Some silver oxide batteries have leakage problems and their surfaces are easy to be covered by alkali. The alkaline electrolyte inside the silver oxide battery is highly corrosive, once leak out, it will cause great harm to your watch. First, the alkaline electrolyte will corrode and make the reed contact rust (Picture 1). Second, serious leakage will rust movement splint and even damage the dial.

So, taking out the battery before storing your quartz watch is advised, you can take it to a jeweler and have the battery taken out. Finally, to keep accurate time, it is important to choose a top quality brand battery and replace it regularly.