The DEWALT DCM572 FlexVolt XR Blower has a highly efficient brushless motor that delivers up to 15 minutes run time (with a 3.0Ah battery). Allowing you to clear more debris, quickly. Its variable speed trigger with lock allows full power control without having to hold down the trigger. The curved tube design creates rotational control and reduces fatigue. Supplied with a concentrator attachment that increases force for stubborn debris. DCM572X1: 1 x 18/54 Volt 9.0/3.0Ah FlexVolt Li-Ion Battery.DCM572N: Bare Unit, No Battery or Charger. Specification Max Air Flow: 195km/h (121mph).Speed: Variable Speed Trigger.Weight: 4.5kg.The DEWALT DCM572X1 FlexVolt XR Blower is supplied with: 1 x 18/54 Volt 9.0/3.0Ah FlexVolt Li-Ion Battery1 x 8 Amp Li-Ion Charger1 x Concentrator Attachment DEWALT FlexVolt XR batteries stand at the forefront of cordless technology. They are the world’s first convertible 18/54 Volt batteries, offering unprecedented levels of power. Provides the unique ability to power heavy-duty construction power tools whilst still being compatible with existing DEWALT XR 18 Volt products and offering increased runtime.