Error range:+-0.005g Weight units: g//ozt/dwt/ct/gn/tl/mg Tare range: Tare full capacity : 2 AAA batteries (not included) Auto-off: 180 seconds size: 50mm Net weight: 100 g High : Accuracy of 0.001 grams, I-shaped sensor, fast reaction speed, and stable with blue backlit LCD display, easy to read, compact size, portable, lightweight Unique windproof cover design, prevents external environment disturbance affecting the weighing accuracy Count (PCS button) function with count and tare weighing function ensures more precise result and the hold function will lock weight reading Mini digital scale can be used as a jewelry scale, lab scale, diamond scale and carat scale, perfect for jewelry, medicinal Number: Milligram Scale Capacity: 20g colour:black Material:ABS+ steel plate Scale size (L x W x H): 110 x 63 x 15mm Package Contents: 1 * Jewelry scales('t include battery) 1 * Tray 1 * Plastic tweezers 1 * Calibration weights 1 * English manual Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.