The Fenix LD30 is an ultra-compact outdoor flashlight featuring a rear tactical switch. Powered by a single rechargeable Li-ion 18650 battery (ARB-L18 3500U included), the flashlight offers five output levels for various scene applications. In emergencies, two cold-resistant CR123A lithium batteries can be used as a backup. Additional features include a two-position body clip and a battery level indicator, enhancing everyday use for outdoor activities and industrial tasks.