The Fortune BL-A7 portable black light contains a 4-watt bulb, emits long-wave ultraviolet light at 365 nanometers, and can be used to detect invisible ink, authenticate paper currency, check for pet stains, look for manufacturing defects, find insects, or perform similar tasks. The attached strap can be looped around a hand or wrist for carrying. This black light measures 6.5" long and 1.6" wide, and requires 4AA batteries (sold separately).

Fortune Products manufactures battery-operated lighting products for special events, seasonal decor, and interior design. The company, founded in 1985, is headquartered in Lake Stevens, WA.