Error range:+-0.005gWeight units: g//ozt/dwt/ct/gn/tl/mgTare range: Tare full capacityPower: 2 AAA batteries (not included)Auto-off: 180 secondssize: 50mmNet weight: 100 gHigh precision: Accuracy of 0.001 grams, use I- sensor, fast reaction speed, and stable with blue backlitLCD display, easy to read, compact size, portable, lightweightUnique windproof cover design, prevents external environment disturbance affecting the weighing accuracyCount (PCS button) function with count and tare weighing function ensures more precise and the hold functionwill lock weight readingMini digital scale can be used as a jewelry scale, lab scale, diamond scale and carat scale, perfect for jewelry, medicinalModel Number: Milligram ScaleCapacity: 20gcolour:blackMaterial:ABS+ steel plateScale size (L x W x H): 110 x 63 x 15mmPackage Contents:1 * Jewelry scales('t include battery)1 * Tray1 * Plastic tweezers1 * Calibration weights1 * English manualOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.