Weighing units: g, kg, mg, ct, GN, oz, ozt, dwt, custom unit – Interface: RS-232 and USB – Power Supply: 18VDC 50/60Hz 800mA adapter – Display: Backlit LCD with 20mm-high digits – Calibration: External and internal calibration – Housing: Die cast aluminum Capacity : 820g Readability : 0.001g Repeatability (S.D.) : 0.002g Linearity (+/-) : 0.003g Pan Size : 120mm ø