Features FIVE DETECTION INDICATORS: Five levels of detection indicators, representing different EMF radiation values; instantaneous response to EMF fluctuations and spikes. PORTABLE AND QUICK RESPONSE: Easy to carry, simple to operate, durable and reliable with ABS engineering material, quick response to test results. ELECTROMAGNETIC FIELD MEASUREMENT: The hunting equipment range used for hunting helps to measure electromagnetic fields to identify equipment that generates high radiation and enables users to decide to limit exposure. EASY TO READ: The colored LED lights make readings obvious to notice in day light or dark, easy to always bring along since fits in your pocket or purse. FOR SUPERNORMAL AND GENERAL DETECTION: For supernormal wave research and general EMF detection, reliable, sturdy, possess outstanding effect and super sensitive. Specification: Item Type: Magnetic Field Detector Material: ABS Battery: 1 x 9V 6F22(not include) Application: Used for supernormal wave research and general EMF detection Basic Parameters: Detection Range: 0~20+ milliGauss Detection Frequency: 50/60Hz (50 to 1000Hz- ELF), (1000 to 20,000 Hz- VLF) Accuracy: 5% (typical) Package List: 1 x Magnetic Field Detector 1 x User Manual Package List 1 x Magnetic Field Detector 1 x User Manual