Analog tester (needle clock) provides accurate and direct readings. Usage: Tests all car and equipment batteries (6 Volt and 12 Volt). Load Test: Tests the battery's ability to start the engine under pressure (100 Amps). Dynamo Test: Shows the charging status of the alternator and whether it needs maintenance or replacement. Starter Test: Equipped with a table below the clock to determine the efficiency of the starter motor operation. Manufacturing Quality: Strong copper clips and excellent connection, Thai made (original). Condition: The device is very clean and in excellent condition (working perfectly). The wires and clips are intact and have no defects.