The Guardian Lights are a great backup light for any situation. The lights contain a Cree XPG2 LED that offers a two-level button activation system. Each light has a 15-lumen low setting if the situation calls for it.
AAA Light – 90 lumens; 60 minute runtime
AA Light – 120 lumens; 75 minute runtime
CR Light – 250 lumens; 105 minute runtime