Feature 1Check the water content of the brake fluid, with 5 level brake fluid status, support DOT3, DOT4, DOT5.1 brake fluid. 2With highaccuracy sensor and universal probe, it can ensure fast, stable and accurate test, reliable to use. 3Bright LCD display allows you to know the detailed information more clearly, and the test results are easy to understand. 4Including 4pcs replaceable AAA batteries, long battery life, can be used for a long time. 5Simple operation, can be operated with one hand, nonslip design on both sides, humanized design, easy to hold.Item Type: Brake Fluid TesterMaterial: ABSSupport Oil Type: DOT3, DOT4, DOT5.1Oil State Test:Water content is less than 1% normalNote that the water content is less than 3%If the water content is greater than 3%, please replace the brake fluidBacklight Display: SupportAlarm Reminder: SupportAutomatic Shutdown: Automatic shutdown within 6 minutes of no operationPower Supply: 4 x AAA batteries (included)Applicable Temperature: -10C-50CMetal Probe: Approx. 190mm/7.5inDescription:The general brake fluid replacement cycle is 2 years. Brake fluid itself has strong water absorption characteristics, it will absorb moisture in the surrounding air, such as car washing, humid air, etc., which will directly lead to the deterioration of brake fluid quality, and may lead to accidents:1. Rear-end collision2. Brake failure3. The vehicle is out of control4. Traffic accident. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Brake Fluid Tester4 x Batteries1 x Manual1 x Storage Box