Features: Digital display & voice prompt car battery tester delivers real time monitoring of voltages, internal resistance, and remaining life , ideal for vehicle owners and technicians seeking accurate battery diagnostics. Featuring ABS metal construction and advanced internal resistance measurement, this compact analysis provides precise battery health assessments with clear voice guided for effortless operations. Designed for car owners, electric vehicle enthusiasts, and repair professional of all ages, it ensures accessibility even for none technical users. Perfect for routine garage maintenance, roadside battery checks, or pre trip inspections to prevent unexpected failures in cars, motorcycles, and electric vehicles. The pocket sized battery health analysis combines laboratory grade testing capabilities, making it an essential toolkit companion for reliabled power systems diagnostics. Specifications: Component: ABS+metal Size:Approx.6.41x3.46x1.45inch Applicable to various models, including electric vehicles, motorcycles, cars and other electric equipment, and widely adapted to market demand. Package Includes: 1pcs Car Battery Tester 1pcs Instruction note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.