Capacity: 800 lb x 0.2 lb (310 kg x 0.1 kg) Platform dimensions: 29.5" x 32" Built-in ramp Large 1" LCD display Ability to manually enter the tare weight of a wheelchair AC adaptor and internal rechargeable battery BMI (body mass index) function Reweigh function Hold function Unit of measure: lb only, kg only, lb/kg RS-232 port Updatable firmware