New Format, Simpler To Use, Easy To Program, Longer Battery Life, New Moisture Resistant Coating, Brighter Display And Stronger Vibration Mode Allows for 24/7 monitoring of your environment, Safe and Sound Micro RF Detector is small, compact, durable and discreet.Super sensitive detection, designed with the electro-hypersensitive person in mind. Accuracy fully certified, operates on a rechargeable battery. Easy to use and understand; no technical experience required.There are three button actions that work when the unit is unplugged from USB. These button actions work identically no matter what the unit is doing. There are no multiple functions to learn.There is one USB action - when the unit is plugged in, the button is disabled and the unit charges and displays battery level. This happens no matter what the unit is doing when you plug in power. Easy to Use Wearable RF Meter Uses state of the art measurement technology and is sensitive below 1 µW/m²Designed with Low EMF emissionsDesigned for the Electrically Hypersensitive person in mindBio-compatible - Meets the requirements of USP Class I-VI and US FDA’s guidance for Intact Skin Surface DevicesBattery operated; 1 rechargeable lithium ion battery provides 1 to 3 days monitoring (before recharging)Engineered in Canada; manufactured in Canada and the USA Third Party Tested: Full Frequency Response 700 MHz - 9 GHz Smart meter emissionsWireless routers (both 2.4 and 5 GHz channels)Cell towersCell phone emissionsCordless home phonesBluetooth devicesBaby monitorsAirport radarMicrowave oven leakage detectionVideo game consoles