This compact unit generates a static electrical charge for the collection of dust marks. Dust is statically attracted to the black underside of the included mylar film. Metal studs on the underside of the unit bridge the film and included grounding plate. Electrical current is controlled by a dial on the front and LEDs indicate power and low battery level. Unique circuitry deactivates the unit when not in contact with the grounding plate. Each unit includes a DustMark Lifter, roll of lifting film, grounding plate and carrying case. The unit measures 12.5cm x 6.7cm x 3.2cm (5″ x 2.5″ x 1.5″) and weighs 0.3 kg (10.8 oz.). Requires a 9V battery (not included).