TWIN PUCKS™ features a task light and an emergency beacon all-in-one. Both lights attach magnetically to each other, but can also operate independently and are separately powered. The task light provides hands-free lighting in three different ways: 180º adjustable stand, hanging hole or the magnetic base. The emergency beacon also has a magnet in the back to adhere to metal surfaces.
In otherwords, the red light makes a really good darkroom light.