brand new and high quality Feature: Used to test Gauss, keep you away from radiation, good for your for health. 5 Led indicators, representing different radiation values: dark green for 0-1.5mG green light for 1.5-2.5mG yellow for 2.5-10mG orange for 10-20mG red for 20and mG. Portable, easy to use, durable and reliable, super responsive to EMF fluctuations and spikes. Easy-to-read multi-segment LED display, even in the dark places or under for sun. It is often used during ghost hunting and for personal safety to identify potentially harmful high EMF radiation. Suitable for detecting mental activity and discovering potentially harmful high EMF levels in the home or work environment. Specifications: Item Type: EMF Magnetic Field Detector Material: ABS Size: 14.32.95.3cm or 5.6x1.1x2.08in Color: Gray, Black(Optional) Power Supply: 1x9V Battery(not included) Quantity: 1 Pc Note: Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes: 1 x EMF Magnetic Field Detector 1 x User Manual