NO BATTERIES NEEDED Suitable for Cars, Jeep,Motorcycles, SUV, ATV, Dirt Bikes, RV, Commercial Passenger Vehicles, RV, and Trucks <BR><BR> LOCK-IN PLACE feature accurate readings until the press reset button <BR><BR> SAVE MONEY ON TIRES - preventing over/under inflation dramatically reduces tire wear <BR><BR> SAVE MONEY ON FUEL - maintaining your tires at the correct pressure can save you $100's <BR><BR> GET BETTER HANDLING - regular tire monitoring ensures optimum vehicle performance <BR><BR> KEEP YOUR FAMILY SAFE - under inflation is the most common cause of tire failure <BR><BR> Product Specifications Accuracy: 2 PSI Measuring Range: 0~100 PSI Material: Stainless Steel Weight: 4.3oz/ 123g Dial Diameter: 1.9” <BR><BR> Everyone wants to cut down on gas expenses. Caring about our environment is also important.<BR> With a properly inflated tire, you can do both. <BR> When tires are not properly inflated, they are less “round” and require more energy to begin moving and to maintain speed. <BR> As such, under-inflated tires do indeed contribute to pollution and increased fuel costs. <BR> So get a Onwon gauge in order to save money and Mother Nature.