Refrigerant dyes fluoresce brilliantly! Budget friendly! Less expensive than competitive UV flashlights, Pre-focused beam optimizes fluorescent response, No time-consuming adjustments needed! Works with all popular Tracerline dyes, 30,0000-hour LED service life, Instant-on operation; no warm-up required, Compact design easily gets in to tight, cramped spaces, Rugged, corrosion-resistant, anodized aluminum lamp body stands up to years of heavy shop use, Powered by three standard 3 AAA batteries (included), Lanyard and fluorescence-enhancing glasses, Power comparable to 100 watt lamps, Inspection range up to 10 feet, Pre-focused beam, Compact design, Uses standard AAA batteries, SKU: ISN16094