Night-Writer is a photography tool designed for illustrating with light.
Use it as you would a marker during a long exposure at night - press the button and the light turns on, lift your finger and the light turns off.
Product works best when used with a camera set to 'bulb-mode' along with a tripod and shutter release.
Light source is bright-white - 7 color-tips are included in the Night-Writer Kit - place these over the recessed tip cavity for different color effects. NW is designed with interior grooves that lock color-tips into place over light-source. It's symmetrical design accommodates both left and right-handed users.
Takes 2 AAA batteries (included). Due to the small amount of power this device consumes and the momentary way in which it is used, Night-Writer can stay bright for a year or more before needing new batteries.