1It can quickly test the capacity of your battery without complex steps. 2Small size, light weight, and onehanded operation reduces operator fatigue. 3Color screen displays the measurement result, easy to read and convenient to use. 4Largearea heat dissipation can run for a longer time, high accuracy, increase data accuracy, and be more precise. 5Onepiece molding without burrs, smooth surface and easy installation. Item Type: Coulomb Counter Material: ABS Color: As shown in the picture Model: VAT-1300 Voltage Measurement Range: 0-100V Voltage Accuracy: 0.01V Current Measurement Range: 0-200A Current Accuracy: 0.01A How to Use 1. Please connect according to the wiring diagram. 2. After connecting, please debug the device before testing. 3. Store the product after the test. 1 x Instruction Manual 2 x Connecting Line 1 x USB Cable 1 x Display 1 x Counter The color of the USB cable is randomly.