Specifications:Model: BT-171Material: ABSTest Method: Positive and Negative Test ClipTest Voltage: 12VLED Light: Red / Yellow / Green / Blue / White, colorful lightsLED Lights Related Instructions:FULL: Battery is in normal conditionMEDIUM: The battery voltage is slightly lower and needs to be chargedLOW: The battery is low and needs to be charged, buzzer alarmEMPTY: The battery is completely dead and needs to be chargedHIGH: High output voltage of alternatorGOOD: Alternator output normalDEAD: The battery voltage is too low, and the buzzer alarm prompts that there should be a problem with the battery. At this time, the battery should be checked by a professional engineer to see if it is replaced.RECERSE: The battery tester is connected to the battery terminal in reverse, and the buzzer alarm prompts.Item Size: 115 * 70 * 20mm / 4.53 * 2.75 * 0.79inItem Weight: 78g / 2.75ozPackage Weight: 100g / 3.53ozPackage Size: 14 * 8 * 4cm / 5.51 * 3.15 * 1.57inPackage List:1 * Battery Tester1 * User Manual (English)