Characteristics Capacity: 20g Readability: 0.001g Scale Size: 76 x 127 x 19mm Platform size: 1.3" Power: 2 AAA batteries (Included) Calibration: 2 x 10g Accuracy doesn't get more accurate with this scale! The Digital Milligram scale is one of the most accurate weighing tools on the market. From medications to gemstones, this versatile scale will meet all your weight measurement needs. It is equipped with high precision sensors that give an accurate measurement in 0.001 gram increments. We have you covered! The scale has several measurement modes that will surely meet your needs. Includes: g/oz/ct/ozt/dwt/gn. The handy tare function allows you to get the net weight of a product you are weighing. The tare function is perfect for using the platter. Simply place the pan on the scale, press tare, then add the items you are trying to weigh. Package Included 1 x High Accuracy Digital Scale 1 x Weighing Pan 1 x Tweezers 2 x 10g Calibration Weights 2x AAA batteries