The invention relates to a system (10), at least comprising: at least one hand-held power tool (12), wherein the hand-held power tool (12) at least comprises at least one sensor element (14) for detecting at least one tool-specific and/or insertion tool-specific and/or workpiece-specific parameter, wherein user-specific information is generated from the sensor signal, and at least one external device (16), in particular an augmented reality device, having an output interface (18). According to the invention, the tool-specific and/or workpiece-specific information is transferred from the hand-held machine tool (12) to the external device (16).