Yup that’s pretty much it, I wish it came with the original instructions, but I found this online:

https://www.timelesstailors.com/p-15441-pewter-astrology-sundial-ring-pendant.aspx

How it works… Crafted of pewter and brass and available in several design motifs, these bold sundial replicas use a unique “Bead of Light” to tell time. First, adjust the brass band for the correct month. Then suspend the dial by its black satin cord with the hole facing the sun. A ray of sunshine will shine and a bead of light will illuminate a number on the inside of the dial, showing the time of day Nicely packaged, all sundials come with instructions. Calibrated to work best near latitude 40 degrees north.