I just found a Citizen Eco-Drive watch two days ago. I have never used it since I bought it. I'

If you are sure that it is an Eco-Drive watch (Eco-Drive is written on the front of the dial), you don't have to worry about not being able to use it. Photodynamic energy watches are watches that convert light energy into electrical energy. The rechargeable batteries used are long-lasting rechargeable batteries with a lifespan of approximately 15 to 20 years. Additionally, they also use a rechargeable battery that can convert a variety of light. energy into electrical energy. Amorphous solar cells can have a lifespan of more than 20 years without problems during use, so they do not need to be replaced regularly like previous quartz watches. The remaining electrical energy other than maintaining the operation of the watch will be stored in the rechargeable battery to better improve the efficiency of electrical energy use. The reason why the watch stops workingurner is usually caused by being left in a dark place for a long time without being charged, causing the rechargeable battery to run out. You first place the watch in the sun to receive enough light to charge it, then set the time after rotating the watch. One thing to note is that if the perpetual calendar watch has not been used for a long time, even if the date is adjusted, the end of month date will sometimes be inaccurate. This is not a malfunction, but rather an incorrect setting of the year and month. You can adjust the reference position first, then set the time and calendar. If the problem cannot be fixed, it is not necessarily damaged. It may be due to the internal lubricating oil solidifying over time. Go to Citizen Service Center for inspection and adjustment, then wash the oil and perform maintenance to resolve the problem.th.