The unit has the following upgrades: Splendide stackable washer dryer, added sliding cargo tray in the front storage compartment, 5 slide out toppers, two deep cycle batteries, exterior paint/interior fabric/leather/vinyl protection(through May 2025). Solar charger added for keeping batteries charged while parked in storage.One trifold couch removed and replaced with standing (height adjustable) desk, that ties down during travel.Unit has central vacuum and auto levelers.Standard features and specifications can be found on Grand Design website for the Solitude 390-RK.