Feature:1. Function: The battery hydrometer is universal, not used for sealed batteries, helps to extend battery life and detect overcharge.2. Advantage: The hydrometer can immediately and accurately test the battery life, the detection is sensitive, the test result is accurate, and the measurement speed is fast.3. Easy to Read: The hydrometer battery tester is accurately calibrated, the indicator is clear and easy to read, and the dial is clear.4. Premium Material: Car battery tester is made of high quality ABS plastic, resistant to aging, wearproof, and not easy to break.5. High Performance: Professional manufacturing, high precision, strong reliability, and simple in operation.Specification:Item Type: Car Battery HydrometerMaterial: ABSFitment: Universal.Package List:1 xCar Battery Hydrometer