Take this Weighmax W-FX 650g on the go without worrying about power cords or scratches. Removable cover keeps scale protected when not in use and also doubles as an expansion tray. Designed to weigh items up to 650 grams in 0.01-gram increments. Back-lit LCD display makes for easy viewing. Powered by 2 AAA batteries (included), Calibration weigh is NOT included.