One cool feature of the S6 Edge is the use of color indicators on the edge of the phone. (heavy.com)
The screen has three different color indicators to help you ensure that your baby's bath water is just right. (tinyfry.com)
The double click «n» secure seal is a patent and claims to have the most secure seal available and has a double color indicator to show the seal is in place. (themamaneeds.com)