Yolev2 Pieces Adjustable Mood Bracelet Dazzling Shimmer Color Changing Beads Yoga Beads Bracelet for Men Women

I used to have a bunch of mood rings as a kid so when I saw these I had to have them, I gave 1 to my mum and kept the other for myself, they were black when they arrived and a minute later mine turned blue then purple and has stayed purple since (its been 3/4 hours now). My sister bought a set for heself and my niece and they love them too

Does not change colour by mood or person only when taken off and only green or blue. No other colour

It arrived on a very cold day and all the beads were initially black, but very soon in the warmth of my hand the 5 middle beads changed colour.