Usage Tips:Error range:+-0.005g Weight units: g/oz/ozt/dwt/ct/gn/tl/mg Tare range: Tare full capacity Power: 2 AAA batteries (not included) Auto-off: 180 seconds Platform size: 50mm Net weight: 100 g High precision: Accuracy of 0.001 grams, use I-shaped sensor, fast reaction speed, accurate and stable with large 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 accurate 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 Model Number: Milligram Scale Capacity: 20g/100g colour:black Material:ABS+ steel plate Scale size (L x W x H): 110 x 63 x 15mm Package Contents: 1 * Jewelry scales(don't include battery) 1 * Tray 1 * Plastic tweezers 1 * Calibration weights 1 * English manual