Toolless blade change system. (with electronic control + speed dial). TOOL ONLY!USER BENEFITS:Electronic speed control maintains consistent speed set for various work-pieces.3 orbital settings plus straight cut.Built-in LED job light for easy tracing of cutting line.Ergonomically designed handle with rubberized soft grip provides more control and comfort.Low vibration and low noise level.Double Insulation, Variable Speed, Orbital Cutting, Bayonet Shank, Dust Collecting, Soft Start, Constant Speed, Built-In Light and Carry Case.