300kg/660lb electronic crane weighing scale metal material LCD display https://www.chinazhengya.com/product/electronic-hanging-scale/300kg-660lb-electronic-crane-weighing-scale-metal-material-lcd-display.html Aluminium alloy shell, thick environment-friendly electroplated metal; Industrial grade materials and workmanship, strong and durable.LCD backlight display, easy to read, use 3*AA battery.in order to extend battery life, automatic shutdown function will automatically shut down in 180 seconds .With overload prompt and the tare function.