The digital amperemeter can check the current and display in red LED. The voltmeter can check the car battery's voltage.Features:2 in 1 design， display the current and voltage clearly in red LED.Over-load and short circuit protection， reverse polarity protection.Fits for 12-24V motorcycle， auto， boat.Specifications:Color: BlackAmperemeter Measureing Range: 0-10AVoltmeter Measureing Range: 6V-30VVoltage: DC 12-24VDisplay: Red LED Digital DisplayMaterial: ABSItem Size: Approx. 5 * 3.7 * 3.7cm / 2.0 * 1.5 * 1.5inItem Weight: Approx. 20g / 0.7ozPackage Size: Approx. 16 * 11 * 3.7cm / 6.3 * 4.3 * 1.5inPackage Weight: Approx. 26g / 0.9ozPackage List:1 * Amperemeter and Voltmeter Kit1 * Pack of Terminals