My wife picked this up for Father's Day (she checked my wish list) and I must say I pleased. It's tough to buy something you can't see except from a picture. There's nothing to compare it to, size wise and all. However I am pleased with this. It's very masculine and solid. I'm not a gold or silver kind of guy and I'm too old to be wearing pukka shells. It's quite hefty, weighing in at .65 kg. The color is gun metal and each bead you see in the picture is individual. The diameter is almost the size of a number 2 pencil but not quite. The cable underneath the beads can not be clearly seen but to me it looks like it could be a 100lb fishing line. That would only be a guess. The magnetic clasp is strong, much stronger then the magnetism of the rest of the chain and it matches the rest of the chain so you can't see where it is. Unless you're playing rugby it should stay on securely. As for the medical benefits of magnetism I really don't care one way or the other. Some say it works and some say it doesn't. I just liked the looks of this so that's why I own it.