Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

This digital gauge displays the voltage. With high brightness LED， there is no difficulty in seeing the display.Features:This digital gauge displays the voltage.With high brightness LED， there is no difficulty in seeing the display.Powered by cigarette lighter charger.Constantly monitor battery voltage， extend and protect the battery and engine life.Specification:Color: blackMaterial: ABSVoltage: DC 6-30VDimension: Approx.2.8 * 1.6cm (Screw Diameter * Height)Package Size: Approx.9.3 * 4.3 * 3cm / 3.6 * 1.7 * 1.2inPackage Weight: Approx.13g / 0.45ozPackage List:1 * Voltage socket