Digital Wheelchair Ramp Scale with Pelstar Wireless Technology, Capacity: 454 kg, Resolution: 0.1kg, Platform Dimension: 29ÃÂÃÂÃÂü”W x 28ÃÂÃÂÃÂü”D, Ramp Size: 28ÃÂÃÂÃÂü”W x 9 7/8”D (secondary ramp optional – B2500RAMP), (2) Wheels, 120V Adapter (included) or (6) AA Batteri