I was so worried when I picked up my JUC today. I was so excited to get it, but so scared to open it. It sat on my counter for 2 hours before I could open it all the way...even needed a drink. You guys are right....My love cuffs are 18 (which I am selling on ebay), I would wear the 17 love bangle, and I was so worried that the JUC 16 would be too small......it's PERFECT. It does have the new mechanism, but is very secure. I tried to open it, tugged it, and pulled it, it didn't budge until the mechanism was released correctly. It is very secure, while easy to take on and off. I love it so much....I took it off already....now comes the task of psyching myself out to just wearing a piece of jewelry like this daily. That was my hope. I just turned 40 and these things aren't worth it if it sits in my closet all the time. Just hard to bite the bullet. Thanks! This site has helped me so much.....and have been a very bad influence