Specification: display method: LED input: 5v-30v DC material: high-quality ABS plastic shell application: fits almost All kinds of vehicles, such as car, Jeep, 4X4, SUV, ATV, UTV, motorcycle, boat, truck, Wrangler, etc. Used to measure the state of your battery between full charged and discharged. Timely grasp the state of battery voltage, voltage measurement purpose can also be used for other products. After-sales service: 2 years and professional customer service any questions, please feel free to contact us.