The 3 circles in GA100-1A1 - Casio G-Shock GW500A-1V Wrist Watch

Have you checked the battery

The red circle is the strength of the receiving signal for time calibration! The 3 sectors are to measure the strength of signal! 3 is max strength and 0 is no strength!

Start with watch in normal clock mode. press and hold bottom right "lap reset" - alarm time appears. Keeping "lap reset" held, I can then toggle the alarm on and off using top right "start/stop".
Qiu:Circle segment lights up (only a black point in the middle, NO ALARM)
Circle segment with a black section on the above middle point, ALARM ON.

have a zoo york watch and I can't understand the directions

wrist watches links are made through two types of connection. First one is road based. the ends of the links are made in such a way that they make a round and interconnected with each other by sliding one link inside other then a thin road is placed in between the circle with spring loaded locking mechanism so that it shall not come out of the circle. In order to remove this type of link you are required to put the end of the link on a small hole and with the help of a small road tap the top of the road inside the links circle. Once the road is out you can slide out both the ends of the links and remove any number of links you wan't.

Second type of connection is made in half round type in this type one end of a link is made half circle and the other end is exactly same size hole the semi circle end fits inside the hole of next link. To remove the link you have to undo the semicircle part with the help of a plair and remove the link.

On the back of the watch there is a circle shape button like. To change the time, push that button like circle with a pointed object until correct time is shown. Check out.Thanks.

Are you sure it doesn't say HGE? HGE stands for Heavy Gold Electroplate. In other words, it's not solid gold but just plated. To be sure take it to a jeweler and they can tell with a simple test that won't damage the ring. The A in the circle could be a manufacturer's mark.

Click on my profile (escapement), then click on Tips and Tricks. There you will find how to remove or add links.. Rate me, please .

Press Both side buttons at the same time. This should reset the hours and minute mini-circles. Then use the top button to "start" the second hand moving again. press it again to stop the second hand. I'm unaware as to how to restart the bottom seconds circle.

pull out the crown one click and press the bottom chronograph button. If That does not work you will have to send it in for service to cartier.