Features 1. Function: The battery hydrometer is universal and not intended for sealed batteries. It helps extend battery life and detect overcharge conditions. 2. Advantage: The hydrometer provides immediate and accurate testing of battery condition. Detection is sensitive, results are precise, and measurements are fast. 3. Easy to Read: The battery hydrometer is accurately calibrated with a clear and easy-to-read indicator and dial. 4. Premium Material: The car battery tester is made of high-quality ABS plastic, resistant to aging, wear-resistant, and durable. 5. High Performance: Professionally manufactured for high precision, strong reliability, and simple operation. Specification Item Type: Car Battery Hydrometer Material: ABS Fitment: Universal Package List 1 x Car Battery Hydrometer