Floating handle and LED pad pressure indication system ensures consistent burnishing pressure. Passive, vortex dust-control system contains airborne particles during burnishing and keeps area clean. Quiet operation at only 62 dBA. Handle-mounted circuit breaker and safety lock-out switch ensures safe operation. Easy-to-use fingertip controls. (2) 5" non-marking wheels. 5 year warranty on all parts and labor with the exception of "wearables" such as brushes, pad drivers, batteries, hoses, belts, and switches.