Specification:
1. Display: 2.7 inch LCD
2. Cable reach: 650 mm (25.6 inches)
3. Storage temperature: -20 celsius to +70 celsius (-4 degrees Fahrenheit to 158 degrees Fahrenheit)
4. Operating temperature: -20 degrees Celsius to +60 degrees Celsius (-4 degrees Fahrenheit to 140 degrees Fahrenheit)
5. Dimensions (LxWxH): 150x90x35mm (5.9x3.54x1.38 inches)
6. Weight: 325g (0.72 lbs)

Precautions:
1. Use the tester as instructed, taking into account the operating conditions and the work to be performed. Using this tester for operation other than intended may result in a hazardous situation
2. Before testing, please make sure that the battery terminals are really clean, as grease and dust can cause false test results.
3. Wear safety goggles when working near batteries.
4. Check that the insulation of the battery clip is normal (not damaged, exposed, or disconnected) to prevent electric shock.
5. Test in a well-ventilated area. Explosive and toxic gases may be generated during testing.
6. Keep hair, hands, and clothing, as well as tester leads and wires, away from moving blades and belts.
7. The tester is not a toy. Keep it out of the reach of children.
8. Do not place the tester near the engine or exhaust pipe to avoid being damaged by high temperature when the car engine is running.
9. Do not smoke, generate sparks or strike matches near the battery during the test
10. Do not remove the battery clip while testing
11. Do not place the tester in a highly humid, dusty environment.
12. Do not disassemble the tester as damage may result.