Features: 1.High and New Technology: The tester is a new high tech product that combines automotive brake fluid detection and tire pressure testing 2.Safe Use: Users can regularly check the water content of the brake fluid of the car to make you safer and safer in driving 3.Simple and Portable: 2 in 1 super cost effective, simple and portable, highly accurate, exquisite appearance 4.2 in 1: 2 in 1 brake fluid detection and tire pressure test, one pen to prevent two potential hazards, to protect your safe driving 5.Security Check: Test the car brake fluid quality quickly to check whether it is qualified, which can remind you to change the brake fluid when necessary to avoid traffic accident Specification: Item Type: Oil Brake Fluid Liquid Tester Material: ABS Product Adapter Battery: Button Battery Model: 1 x CR1225 Quantity(Delivered Without Battery) LCD Display:Tire Pressure Decection.Kpa,Psi,Bar Pressure Units by Switching Button,Tire Pressure Decection Button ,Brake Fluid Decection Button LED Light: Detecting DOT4 brake fluid performance,Water 0% Good ,Water 3% Bad Note: Delivered Without Battery