The Truweigh Digital Scale is small enough to carry in a purse or backpack with the weighing power of a tabletop scale. The scale has a removable cover tray and a back--lit digital display. Weighs in: g, oz, ozt, dwt, gn, ct. Includes (2) AAA batteries. 10 year warranty. Available in 100g x 0.01g size or 1000g x 0.1g size.