Features: Fast and Accurate Measurement Our battery density tester ensures quick and precise detection of the electrolyte density, guaranteeing proper battery function. Easy to Use Simply insert our device into the electrolyte to instantly read the results. Its user friendly makes it convenient for anyone. Suitable for Various Users Perfect for mechanics, car enthusiasts, and individuals in need of assessing battery health. Versatile Applications Whether you own a repair shop, maintenance station, or have a garage, our tester is essential for regular battery checks. Sturdy Crafted from quality materials, our tester is built to withstand extensive use without damage. Specifications: Material: ABS Size: About. 155x105x49mm/6.10x4.13x1.93in Package Includes: 1pc Car Battery Hydrometer Tester note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.