Keyless or Keyed Chuck: Depending on the model, they feature either a keyless chuck for quick bit changes or a traditional keyed chuck.
Variable Speed: Most models include variable speed settings via the trigger for better control across different materials.
Forward and Reverse Function: Essential for both driving and removing screws and fasteners.
Adjustable Torque/Clutch: Cordless models often have a numbered clutch dial to control the applied force, preventing damage to materials or screws.
Impact/Hammer Function: Some heavy-duty cordless models are impact drills designed for tougher materials like concrete or masonry.