Denshine Radiation Detector Smart Geiger Radiation Watch Counter Nuclear Gamma, X-ray for iOS Android Smart Phone (Black) Personal Home Purpose Radiation Detector for Smart Phone Preliminary simple measurement. Use the Semiconductor sensors, measurement of radiation (Gamma, X-ray) Ultra -compact design, ultra -low power consumption, No External Battery. High sensitivity measurements using a precision signal measurement technology. Real-time display of measurement results. It is easy to measure the radiation, can be connected to the earphone jack (3.5) of the smart phone. Smart Geiger displays the radiation dose rates, radiation pulse count, the measurement time in Smartphone applications.