Overweight Function - When the weighing item is over 50.7lb(23kg), LCD display lights up yellow. If the item weight is over 50kg, the LCD display will show (o-ld) to warn of overload. Multi-functional - Auto off low reminder for saving power and change in time. Weight overload and auto lock weight. Included CR 2032 . Backlit LCD Display - Easy to read even in dim light for viewing. Mini size for daily pocket carry or travel.(Note: If the product cannot be turned on, please try replacing the before using it.) 4 Units Switchable and Tare Function- Maximum capacity up to 50kg, min 100g. 4 switchable weighing units : lb, kg, oz, g. Design - Made of 304 stainless steel, comfortable handle fits human palm. Keep 90 degrees vertical when weighing.