Description: FEATURE: Test Gauss, keep you away from radiation, good for your health. HIGH QUALITY: Made of high quality plastic material, durable. FUNCTION: EMF emissions are recognized as an environmental agent that are a potential threat to public health. Some scientific evidence suggests links of the biological effects of EMF to childhood leukemia, brain cancer, miscarriages and fetal abnormalities. We are exposed to EMF at home, in the workplace and even outdoors everyday. ADVANTAGE: Easy to read LED lights in the dark and in the sun. Portable, easy to use, rugged, reliable, super responsive. APPLICABLE: Used for -normal wave research and general EMF testing. Specification: Material: ABS Optional Color: Black, Blue Detection Range: 0 to 20+ milliGauss Detection Frequency: 50/60 Hz (50 to 1000 Hz—ELF) (1000 to 20,000 Hz—VLF) Accuracy: 5% (typical) Operating Temperature: 0 to 120 Degrees F (-18 to 49C) Battery Requirements: 9V battery Size Chart: 14.3x2.2x5.3cm / 5.63x0.87x2.09inch Package Includes: 1x EMF Meter 1x English User Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!