Bruno Elan Straight Rail Stairlift for up to seven stairs - Model SRE-3000 Rack and pinion smooth quiet ride Seat armrest fold up out of the way Maximum weight - 300 Lbs (136 Kg) 2 chargeable 12V Batteries Seat Swivels at top of rail 2 wireless call/send remote controls brings chair to you Seatbelt with buckle Seat height is adjustable