Standard head and arm covers Standard large dual pockets Easy-to-remove back Transformer features self-diagnostic electronics with 9′ cord Quiet and smooth lift system Wooden frame composed of engineered furniture grade laminate/hardwood for added strength and durability Heavy-duty lift actuator & scissor mechanism Fire retardant (California specifications; bulletin 117-2013) Integrated battery backup in case of power failure Lifetime warranty on steel lift frame 2-year limited warranty Rolled armrests