External weight calibration, Large 16.5mm high Liquid Crystal Display (LCD), Selectable modes-weights, unit, count and percentage, 12 units of measurement, Mono-Metal Tuning Flork Sensor (MMTS) provides quick response and stability, 20-step bar graph display, 115 VAC adaptor included (230 VAC optional), One part in 620000 resolution, RS-232 bidirectional, Plastic housing on models <1,000 g, plastic top and die cast bottom on models >1,000 g, Options: Rechargeable battery, NTEP certified models