Features:100% brand new and high quality.Made of premium strong plastic shell, impact resistant and durable.Can test the electric field and the magnetic field radiation at the same time.Display the radiation value on the LCD digital display, easy to read.Data locking, one-key lock of the radiation value and easily read the value.Sound-light alarm, when the test result exceeds the safe value, will alarm automatically.Radiation assessment, remind you whether the radiation value is safe or not.Specifications:Material: ABSColor: Black+RedSize: 130*60*25mmPower Supply: 3.7V lithiun battery(Included)Range: Electric: 1-1999V/m; Magnetic: 0.01-19.99TAccuracy: Electric: 1V/m; Magnetic: 0.01TAlarm Threshold: Electric: 40V/m; Magnetic: 0.4TDisplay: 3-1/2 LCD DisplayTest Bandwidth: 5Hz-3500MHzSampling Time: Approx. 0.4 SecondsTest Mode: Bimodule Synchronous TestPACAKGE INCLUDED:1 * Electromagnetic Radiation Detector1 * User ManualNOTE:1. Due to the hand measurement, there may have error measurement about 1-5mm.2.Item color displayed in pictures may be showing slightly different on your computer monitor since monitors are not calibrated same.Your understanding will be highly appreciated.