Brushless Motor — many versions use a brushless electric motor, which tends to run more efficiently, quieter, and longer on a charge.
Adjustable Spray Patterns — the spray gun allows you to choose between several spray patterns (for example: horizontal, vertical, circular) depending on what you’re painting or coating.
Multiple Nozzle Sizes — it usually comes with a variety of nozzles (e.g. 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm) so you can adjust to different paint types and viscosities.
Flow Control — there is typically a flow-adjustment control (e.g. knob or trigger-back control) that lets you regulate paint output for thin or thick coatings.
Good Container Capacity — many models use a detachable paint container around 800 ml–1000 ml, which reduces the frequency of refills when working on larger surfaces.