The TT series of flashlights from TerraLux™ are precision engineered illumination tools, developed for tactical and self-defense use. The dynamic dual-button tail switch design allows you to instantly access the disorienting strobe mode when needed or select your lighting modes as desired.It measures length 5.2” x head 1.04” x body .98”. It is built to withstand the most rugged conditions, provide unquestioned reliability, and provides unique professional features that are demanded by our customers.