Buyinhere&trade; Portable 20g/0.001g Mini Pocket Jewelry Scale Electronic Digital LCD Balance Weight Weighing Milligram Scales + Farmar + Tweezers Capacity/Accuracy: 20g / 0.001g; Unit Switch: g/oz/ozt/dwt(tl)/ct/gn LCD display: 5 digit LCD display; Back light:Blue backlight(optional) are, Counting, Low Power function Auto power off after 3 minute without operation(set up); Switch on/off Power Supply: 2X 1.5V AAA battery(Not Included)