This scale is a mini professional digital scale with 8 units of mg, g, oz, tl, dwt, gn, ozt and ct, designed for weighing gold, jewelry, powder or medicinal materials, etc. Specifications: Material: ABS Color: Silvery Plural Capacity/Accuracy: 100g0.001g/10g0.001g/20g0.001g/50g0.001g(Optional) Units: mg, g, oz, tl, dwt, gn, ozt and ct Power Supply: Use with 2 * AAA battery(not included)/USB Plug-in Use/Use after USB Charging Power Off: Adjustable. Auto Power-off after 60/120/180 seconds or manual shutdown. Function: ON/OFF, Tare, Unit Switch, Count. Item Size: Approx. 116.31.5cm/4.332.480.59in Item Weight: 105.5g/3.72oz Package Size: Approx. 19.210.44.3/7.564.11.69in Package Weight: 213.6g/7.53oz Package List: 1 * Digital Scale 1 * Weight(20g) 1 * USB Charging Cable 1 * User Manual(English)