This is a terahertz bracelet. It has many cuts and reflects light like a mirror ball, making it sparkle beautifully! (^^) It has 24 beads of 8mm each, so it's suitable for both women and men. The length is about 178mm. Terahertz is said to vibrate a trillion times per second and is also good for your health. How about it for yourself or as a gift for someone special? (^^)