Handy digital pocket scale with retractable backlit display; Black * Weighs up to 1000 grams in 0.1 gram increments; Ships Pre-Calibrated; Calibrates with a 500g weight (sold separate); Tolerance ±0.2g * Comes bundled with two expansion trays including an extra large one with deep sides for weighing loose items * Auto-Off after 60 seconds of non-use; Platform Size: 2.7 x 2.7 in; Auto-Zero Tracking; Integrated Overload Protection * 10 Year Limited Warranty; Powered by two AAA batteries (included)