Party Supplier for 100-pcs Pack 8" Glow Bracelet 1. green,blue, yellow, red, etc 2. ASTM, CE, SGS ... use batteries, generate negligible heat, are inexpensive, and are reasonably disposable. They can tolerate high pressures, such as those found underwater ... two components. Party Supplier for 100-pcs Pack 8" Glow Bracelet