Golden's SmartTek® is a patented self-diagnostic technology that is standard on all Golden lift chairs. SmartTek notifies the user if there is an electrical malfunction with their chair, helping technicians to diagnose the issue quickly and easily over the phone, saving valuable repair time! SmartTek gives the repair technician a better understanding of what parts they will need to repair the chair before they even leave the office. Features: Battery back-up system brings chair from recline to seated position in the event of a power outage (batteries not included) USB charging port Side pocket for extra storage Head rest cover included Non-skid leg levelers for extra stability and safety Optional Luxurious Heat and Massage System Featuring: Two different massage zones: one across the lumbar (lower back area) and one in the seat Four massage motors provide relief to stiff, tired and strained muscles 15 and 30 minute massage timers Activate any of the massage zones while in Wave or Pulse massage settings Independent adjustable massage intensity and speed settings Independent 30 minute heat timer Soothe back muscles with our warming heat system Low and high heat settings