I found this while cleaning out my parents' house. I don't know much about magnetic necklaces, but from what I've researched, they seem to have effects on things like stiff shoulders, although the experience varies from person to person. They are magnetic and attach by overlapping, so there is no clasp. The thin pink beads give it a gentle feel. I've only used it a few times, so it's still shiny and very clean. Length: Approximately 90cm Please understand the above before purchasing.