The product can effectively analyze and read important car data such as voltage, internal resistance, cold crank amperage and AH capacity, battery health and state of charge, providing accurate results, calculating the cold cranking capability and aging of the battery, and achieving more Faster, more precise car repairs. Prompt for poor contact, the monitor will react when the test clip does not clamp the positive and negative poles of the battery. Reverse polarity protection, when the polarity of the input power supply is reversed, it can protect the switching power supply from being . The test line is made of high-quality environmentally friendly materials, which have good elasticity, are not easy to break, and are tough and durable. The clip is made of pure copper material, with a large opening range, strong occlusal force and more accurate measurement. Non-slip design, easy to operate with one hand. Integrated cable machine design, the interface is stable, to prevent falling off and loss. Physical buttons, fast response and good feel. Wide range of applications, can test 6V/12V/24V batteries, suitable for motorcycles, cars, lawn mowers, golf carts, ATVs, trucks, marine batteries, etc. Colour:Photo Color Material:plastic Package Contents: 1 x Car Battery Tester 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.