These LED Flashlights measure 2 1/2" long, are attached to a small link chain, and then are connected to a 1" rippled split ring. This item has three hi-powered LED bulbs and comes with four LR44 button cell batteries.  The imprint process on these flashlights is via laser engraving, and this part of any order will ship under separate cover from our laser factory in Texas. The flashlights are only available in assorted colors:  BLACK, BLUE, GREEN, and RED.