This tri function pen features a uniquely designed ballpoint pen that is easy and comfortable to use. The pen has a pre-installed ink cartridge that has been filled with black ink, for your entire writing needs. The LED flashlight is fairly small but provides an adequate amount of brightness in dark areas. This flashlight can be used as a mini searchlight or an immediate response to sudden darkness. Each one of the tri-function features is simple and very easy to use. The head of the pen can be pushed to turn the flashlight on or off, while the stylus and ballpoint pen function regularly.