The NOS Easy-Test Professional Car Battery Tester is a reliable and efficient tool designed to test all 6V, 12V, and 24V car battery systems. Made by Easy Test in the United States, this single item product is guaranteed to provide accurate readings and ensure the health of your vehicle's battery. With the manufacturer part number BT-701, this professional grade tester is a must-have for any car enthusiast or mechanic looking to maintain and diagnose automotive batteries.