Variable speed - precise drilling start and perfect adjustment to the application. Lock-on switch for more comfortable extended use . Safety clutch protects machine and user if drill bit jams. Reverse function. Hammer stop function - turns off the hammering action - for screw driving applications or drilling without percussion in wood/metal. Service hatch - access hatch for servicing (e.g. worn-out carbon brushes) . Depth-gauge knob. Soft grip for user comfort. 4 m cable.