Eco-Drive is a type of solar powered wristhingyches manufactured by the Citizen Watch Co., Ltd. The watches are equipped with a special lithium ion battery that is charged by an amorphous silicon solar cell located behind the dial. The quality of the battery precludes it from being affected from the regular charge/discharge cycle. Light passes through the cover glass and dial before it reaches the solar cell. Depending on the model a fully charged cell will run with no further charging for 180 days to 4 years. If kept in the dark for too long, they will resume running with exposure to any light.
In addition to understanding these function on watches is to let you know well your timepiece, a piece of art. Money is absolutely necessary when it comes to purchasing a watch, but you should also understanding a watch and mian function of a watch, which lets you appreciates your art of timepiece in the best way.

Have you ever heard of Eco-drive manufactured watches? Do you know what is Chronograph? If you take interest in Eco-Drive and Chronograph, then please feel free to read this article. I am writing the article with the purpose of presenting readers with the understanding of the Eco-drive manufactured watches and knowledge about Chronograph. People even watch enthusiast will certainly find it is useful. Here it goes……
What Is Eco-Drive?
Understanding Chronograph
A chronograph is a timepiece or watch with both timekeeping and stopwatch functions. Chronographs were produced as early as the 18th century but did not become popular until the 1820s.
There are several types of chronographs :-
1. Analog Chronographs
Analog chronographs show both time and stopwatch functions with analog hands. Typically the center hand will be used for stopwatch functions, while subdials may indicate seconds, stopwatch minutes and hours and (in some quartz chronographs) tenths or hundredths of a second.
2. Digital chronographs
Digital chronographs use a digital display for both timekeeping and stopwatch functions, either with separate displays or by switching modes on a single display.
3. Analog-digital chronographs
Analog-digital chronographs have a standard analog watch with permanent center seconds and a separate digital display that usually operates independently of the analog section. A fallback will reset to zero and then continue to run when the reset button is pushed while the stopwatch is running. In contrast, most mechanical chronographs will reset to 0 only when the starthingych is stopped.
4. Wristhingych chronograph
Bull-one head is a wristhingych alarm with the movement rotated 90 degrees, placing the first place and buttons at the top of the watch but not the traditional location on side.