Classic MR-16 style LED lamps with fully adjustable heads provide optimal center-to-center spacing; Provides 90 minutes of emergency operation; Fully gasketed clear polycarbonate cover offers protection against wet, non-hazardous dust, corrosive atmospheres, and water spray or splashing water locations; Ultra-bright, energy-efficient, long-life 3.3W LEDs; Low voltage disconnect prevents battery from deep discharge; Fully automatic solid-state two-rate charger recharges battery in 24 hours; Charge rate/power ON LED indicator light and push-to-test switch for mandated code compliance testing; Optional internal heater for extreme cold temperature applications; Optional wireguard provides added protection