The SabreLite is o-ring sealed with a twist on/off lens shroud and comes with a polarity battery guard tray that safeguards against dangerous "outgassing" of hydrogen from an accidentally reversed cell. It is powered by 3 C alkaline cells, submersible, and has an ABS resin body which resists chemicals, corrosion, and extreme temperatures. Unlike ordinary torches with yellowish beams, the SabreLite's incredibly bright Xenon lamp produces a powerful collimated white beam of light. Peli's SabreLite is the leader in quality and performance.