Nitecore Explorer Series Flashlights - EC4GT (upgraded from EC4), EC4S and EC4GTS - These are 2x18650 Flashlights with parallel battery tubing that gives a great grip. White the EC4GT is designed for throw, the EC4S and EC4GTS are designed for flood. These are unibody die-cast Flashlights - meaning no parts, just single piece, which give them great strength. Because of their unique grip and good runtimes these are preferred as duty lights by many professionals across different industries. Order your Personalized EC4GT, EC4S and EC4GTS Flashlights today at Lightorati.