Check the listing for details. DS18 VMT1 Stand Alone Digital Blue LED Display Car Volt Meter Voltmeter Voltage. Condition: New. Listed at 31.95 USD. Brand New DS18 VMT1 Digital Display Car Audio Voltmeter COMES WITH 3 YEAR WARRANTY NOT RETURNED ~ NOT REFURBISHED ~ BRAND NEW FACTORY SEALED The VMT1 is our reliable voltmeter used to measure the voltage in your vehicles battery with pinpoint accuracy. Optimization is key in all of our designs: so it’s important to optimize and maintain your voltage levels when using any DS18 amplifier. Make sure your system is performing at its peak by monitoring the voltage levels your battery is reaching. This product makes it that much easier by warning you when your voltage levels have gone too low. Included is an easy-to-use instructional on how to correctly get your vehicles voltage displayed on the product’s screen. Highlights A stylish, easy-to-use voltmeter that works with all vehicles A system that helps monitor and maintain the voltage levels in your car A voltmeter that also helps protect your system by warning when voltage has hit low levels Great for Car Audio Pro Audio Motorcycle Audio Jeep Audio Brand New 3 Year Warranty Comes with 3 year StereoNeeds warranty. For any warranty issues please contact us. Our company has been in the stereo business for over 20 years We have sold on EBAY since 2000, so please bid with confidence. We have a 99% positive feedback rating on EBAY! We have very prompt shipping. We will gladly answer any technical questions you have. If you have any questions, problems, warranty issues, or concerns please contact us.