5 modes; High-power: Torch light is made from aircraft grade aluminum and can withstand extremes of temperatures, from freezing to boiling. It is waterproof and shock resistant # . MODES: high brightness; medium brightness; low brightness; strobe (intermittent flashing); SOS (emergency signal) # ADJUSTABLE FOCUS: Intense Spotlight Focus for long range observation Circle Floodlight focus for large area illumination # POWER SOURCE: 1pc 18650 Lithium-ion Battery (included) or 3pcs AAA Battery (not included) # PORTABLE : 5. 4 inches L x 1. 6 inches width. Torch light is small enough to fit in your pocket, handbag, or car compartment, so you can take it with you wherever, whenever you want