Compact design, easy to carry in your pocket, bag or briefcase and measurement can be done even in extremely cramped conditions (66 x 98mm). Light weight: only 100g in weight (including batteries). Selectable weighing unit: meet any weighing application by choice of weighing unit of grams or ounces; simply change unit by pressing a button on the under-side of the scale. Battery operation: uses 2 AAA alkaline batteries for easy transportation. Auto power off function: to save battery consumption for a long battery life, it automatically turns itself off after 30 seconds of the display showing "0.0g", and after 2 minutes when the weighing is stable. Large LCD display: easy to read the 8mm high 7-segment LCD to prevent reading errors. Backlight function: Beautiful blue backlight makes reading the display easy even in dark weighing conditions. Standard calibration mass: Standard calibration mass of 100g comes provided with the HJ-150 in its carton box to save you from purchasing calibration mass separately. One-touch calibration with the standard calibration mass provided makes scale calibration extremely easy for accurate weighing. Protective cover, protects the weighing pan from overload and shock-load when it covers the scale; the protective cover can also double as a weighing container to be used to measure small objects. Capacity x resolution: 150 x 0.1g/5.29 x 0.01oz. Display: 7 segment LCD with backlight (8mm height). Power: 2 x "AAA" size batteries. Pan measures 2-3/8" width by 2-1/2" depth. Measures 2-5/8" width by 0.80" height by 3-7/8" depth.