Battery Charge / Charge Error - The upper left LED indicator lights orange when the battery is charging and turns off when the battery is fully charged. The indicator flashes when there is a problem with the USB cable.
Mode Indicator - The bottom left LED indicator lights orange when the power button is pressed once, or when the Pearl is in Auto-Start Mode.
Ounce Indication - The upper right LED lights green when the weighing unit is set to ounces.
Tare Operation - The lower right LED flashes green when the tare button is pressed.