This scale Dallas model is intended for non professional use. It is used for weighing all sorts of valuables such as gold, silver, coins, medication, gems, and herbs. It comes with a warranty card and an instruction manual. Technical specifications: Weighing units:g/oz/ozt/dwt/ct/gn/tl Capacity: 300g/0.01g Tare range: Tare full capacity Auto calibration 2x AAA batteries included Two clear bowls Stainless steel platform Backlight display Auto off: 60 seconds