There are a number of things that I like about my Casio G-Shock watches, but the two most important things are the solor power and the atomic sync. As more and more G-Shocks found their way to me, I needed to find a way to sync all of them at the same time and to give them exposure to the sun. A coat hanger, foam pipe insulation, black duck tape and a piece of cord hanging from the window lock did the trick. I can nightly hang my sync rig (facing out) in a westerward facing window and awaken in the morning with all of the watches having an up to date sync. In the afternoon the watches get sun for solar charging.
Of course my good wife of 49 years has had more that one good chuckle over my invention, but it works! Cheers, Bill P.