Two-year warranty specifications: display: LED measure voltage: 12-24v interface type: anode and cathode material: environmental protection engineering plastic shell range of application: cars, motorcycles and other universal models features: the state of your battery between full charged and discharged the meter has easy to read LED segments and connect to your 12 Volt system used to monitor the storage-battery voltage, with reverse connection protection function, line will not burn timely grasp the state of battery voltage, voltage measurement purposes can also be used for other products package content: 1Pc red LED digital voltmeter.