Capacity: 220 lb.. Accuracy: .015% of reading. Fully enclosed and removable metal scale platform enables use of product in or out of the protective case. Large, highly visible 1-1/2" x 2" /37mm x 48mm high resolution LCD readout . Includes automatic off feature High capacity 220lb/100kg Compute-A-Charge refrigerant charging/ recovery scale, calibrated to strict NIST standards. Large, highly visible 1 12" x 2" /37mm x 48mm high resolution LCD readout displays either Imperial or Metric measurements in .25oz / 10g increments. The ergonomic hand held remote incorporates a 6ft coil cord, a hanging hook and is backed with a magnet for attaching to metal surfaces. Full mechanical and visual overload protection. Operates 60 continuous hours on two 9V alkaline batteries. CERTIFIED - Calibrated to standards traceable to the National Institute of Standards and Technology (N.I.S.T.)