Detecto's baby scales allow you to weigh the smallest of patients with accuracy and dependability. This scale comes with a tray for infant weighing. It is easily collapsed for transport, or to use the scale to weigh standing toddlers. The display automatically shows the date and time in sleep mode or by pressing the time/weight button during weighing. Measurements are held with the hold/release button to account for active toddlers. The tare button removes any additional weight added from the tray, blankets, or bedding. Results can be stored within the scale's memory and recalled, along with the date and time of the measurement. The difference button allows you to compare past weights that have been saved to current ones. The scale is powered by 1 9V alkaline battery (not included) and one 3V CR2032 lithium backup battery (included) for memory.