Backed by a 4-stroke engine, the Gentrax 800W Max Pure Sine Wave Inverter Generator mini is designed to run as smoothly as possible. It also has a low oil/overload protection for easy maintenance and extended lifespan.Small in size, but big in power. Our mini inverter generator is a handy companion outdoors. This 8.5kgs unit houses a powerful 4-stroke engine and has a low oil/overload protection feature that allows not for maintenance-free operation. UV-tested and designed to withstand the Aussie outdoors, this is guaranteed to last you for years of adventure.