Features: Ensures your vehicle battery is in best condition with the bt890 car battery tester, a high precisions tool designing for accurate 12v battery diagnostics. The bt890 features easy to read display and doesnot require polarity distinction during testing, making it a user friendly device for voltage and battery health checks. For automotive repair technicians and automotive enthusiasts who wishs to perform regular maintenance and ensures their vehicle reliability. This battery tester is perfects for use in garages, auto shops, or at homes for routine vehicle battery inspections. With its comprehensive functionality including voltage, charge state, and current measurements, the bt890 is essential diagnostic tool for any car owner toolkit. Specifications: Component:ABS Size:As Picture Shown Model: BT890 Voltage ranges: DC4-16V Error value: ±0.10V Polarity test: there is no need to distinguish between positive and negative electrodes. Wire length: 45cm Package Includes: 1pcs Battery Tester 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 coloring of the item. Thanks for your understandings.