The black decker gwc1820pc blower is part of the power command range simply push the power boost button to clear more stubborn debris its efficient design delivers a max of 209 kmh to easily clear debris from hard surfaces like patios decks pavements drives and garages with a lightweight low noise design for improved manoeuvrability and control whilst providing quiet operation the soft grip handle provides added comfort during use supplied with 1 x 18 volt 20ah li ion battery specification blo