Remember darkrooms, developers, red lighting and chemical baths? Back before you could take pictures with your phone, you had to use a type of camera that required rolls of "film" that then required many steps to be developed. Each of those steps needed to be carefully timed and in order to that you needed a timer. One that looks a lot like this watch. This watch is perfect for photography enthusiasts. Glows in the dark. 1 year warranty. Water resistant, not waterproof.