The Multipurpose 3-in-1 Wheelchair Scale, model SR755L, is a digital wheelchair scale designed for use by individuals with mobility disabilities or spinal cord injury. The platform has built-in wheels and dual ramps, and can accommodate walkers, wheelchairs, and standing users. The scale has a 16-character liquid crystal display (LCD) digital display that shows weight in either pounds or kilograms. This unit is equipped with auto power shut down. POWER: Uses six D cell batteries and has a low-battery indicator. DIMENSIONS (HxLxW): 1.5 x 28 x 28 inches. CAPACITY: 1,000 pounds. WARRANTY: Two year limited warranty.