The EJ-410 compact, high resolution-type Newton weighing balance features counting, percentage, and comparator functions with full digital calibration. The counting mode weighs the sample pieces and calculates the unit weight, then uses that to count the number of items. The percent mode displays the weighing value in percentage compared to the reference (100%) weight. The comparator shows the results of the comparison. The EJ-410 balance may be operated with an AC adapter as well as cordlessly on four AA size dry cell batteries. The backlit LCD display facilitates weighing in lowly lit environments and the compact footprint requires minimal counter space. Operating temperature of -10°C to 40°C (14°F to 104°F) at less than 85% relative humidity (non-condensing). Comes with a 5-year warranty. Number Of Samples: 5, 10, 25, 50, Or 100 Pieces. Display: 7 Segment LCD Display With Backlight. Display Update: 10 x Per Second. Power Supply: AC Adapter Or 4 x AA Dry-Cell Batteries. Battery Operation: Approximately 70 Hours (Backlight Off). Weighing Pan Diameter: 110mm. Weight Capacity: 410g. Minimal Display: 0.01g. Repeatability: 0.01g. Linearity: +/- 0.02g. Sensitivity Drift:+/- 20ppm/°C (10 To 30°C/ 50 To 86°F). Maximum Count: 41,000pcs. Minimum Unit Weight: 0.01g. Minimum 100% Weight: 1g. Calibration Weight (Factory Setting): 400g. Platform Dimensions (L x W): 5 x 5.5in. Balance Weight: 850g. A&D Weighing® #: EJ-410.