Case:

Lamp:

Red or Yellow.

Power Supply:

One 3V lithium coin cell (CR-2032).

Case:

Glass filled Polyurethane.

Lamp:

White: Solid state full spectrum (6500 Kelvin) 
Blue: Solid state Blue, 470 nm. 
Green: Solid state Green, 525 nm. 
Red: Solid state Red, 626 nm. 
Yellow: Solid state Yellow, 590 nm.

Power Supply:

White & Blue: Two 3V lithium coin cells (CR-2016). 
Red, Yellow, and Green: One 3V lithium coin cell (CR-2032).