Reasons to use carbon batteries for clocks:
1, for the clock, the clock movement only needs a small current to cope with, with alkaline batteries or rechargeable batteries will cause damage to the movement, resulting in inaccurate travel time, and even burn the movement, affecting the service life. Therefore, it is better to use carbon batteries. However, due to its chemical characteristics, carbon batteries may leak after the power is exhausted, so it is necessary to choose high-quality carbon batteries.
2, alkaline battery time is too long, the internal will flow out of some corrosive liquid, these liquids if the flow into the camera, it is very easy to cause component damage. Alkaline batteries are not impossible to use, but to choose a low current alkaline battery below 500 mA, otherwise the watch movement is easy to be damaged by high current.