Highly precision strain gauge technology Speedy weighing and counting High light LED display Automatic add-up/peak/unit convention/piece counting function Dual-display to show weight, unit price, amount Framework structure with pressure limit-protection Overloaded and low voltage indication AC-DC dual use, built-in rechargeable battery Long lasting power can be used up to 120 hours External AC charging voltages: 110 to 220V Brand new item. comes in either analog or digital form, and in different weighing capacity sizes.