Disclosed is a handheld tool which continuously provides a plurality of fasteners and comprises: an ejection detector which detects that a fastener has been ejected; and a controller. When the ejection detector detects the ejection of a fastener, the controller switches the tool from a standby mode, which is a power-saving state with low energy consumption, to an operating mode in which normal operations can be performed; also, when the normal operations are completed, the controller switches the tool from the operating mode to the standby mode.