Tare Function Auto Power Off Capacity: 50 Kg Over Load Indication Low Battery Indication Blue Backlight Function Power: 3V (AAA Battery - 2pcs)Display Data Lock Function with Sound Indication High Precision Strain Gauge Sensors System 40mm x 15mm LED display with blue backlight, very easy to read. Lock Result FunctionThe scale has a lock function, this function is used to accurate the weight of the measurement when the object is stable during measurement, the data will be locked and the LED will display HOLD. At the same time, you can hear beep, read the accurate weight on the screen