This compact light resembles a mini pen, and includes a red laser pointer on one end, and a bright LED light on the other. Included are 5 tips that can be screwed onto the laser end to create different cool images. The barrel comes in assorted colors, and features a pen-like clip so you can attach this to a shirt pocket. Uses 3 LR44 and 3 AG3 batteries (included and replaceable). The red laser diode has a wavelength of 650NM and a maximum output of 5MV. The flashlight laser pointer measures 3.5" long.