Functions: 100% new and high quality. Ensure your driving safety with the brake fluid tester accurately and quickly test the quality of your car brake oil. Support DOT3, DOT4, DOT5.1 switchable. Highly sensitive universal probe, reliable and durable. Accurate testing with rapid response. Color display, high resolution. Suitable for all car owners, whether you have a personals or commercial vehicle, regularly test your brake fluid quality and take necessary measures based on the test results. Convenient and portable, the brake fluid tester can be used in various settings like repair shops, maintenance centers, or even at home. Specifications: Product model: V066 Material: ABS Operating voltage: 3V Working current: 20-25mA Working temperature: -30-70 Color: Black Size: About 156x65x22.3mm/6.14x2.55x0.87inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks for your understandings. Package included: 1x Brake Fluid Tester 1x English Manual