The service life of the battery and what factors?

　　And two factors: the life of the battery 1, battery capacity, battery capacity, the greater the power, the smaller the service life is longer.

　　2, watch the size of the circuit power consumption, power consumption of the quartz watch now about all around 1 microamps, battery capacity at about 4 ~ 40 MAH, lithium battery capacity to be more bigger. Said the general, the smaller the watch battery also is smaller, and the smaller capacity, life is short; Watch than three second needle or more pointer battery is durable. Anyway, under normal use of the battery at least also want to ensure the life of more than one year. If you watch a frequent replacement battery, that is about to consider whether there is a fault.