Geiger Radiation Counter "Gamma" and "X-Ray" Detector, compatible with iPhone 4, 4S, iPod touch 4, Built-In Real Geiger-Muller counter, Smartphone App in App Store, Compact Design & Self-Powered, Swiss Design ITERIUM Geiger Radiation Counter Detects "Gamma" and "X-Ray", compatible with iPhone 4, 4S, iPod touch 4. Use Real Geiger-Muller Counter, Smartphone App in App Store, Compact Design & Self Powered, Swiss Design The Radioactivity tester measures the radiation level of your environment and any objects any objects, like construction materials, food etc. This Tester is compatible with iPhone 4,4S and iPod touch 4th generation and can work with iPhone5, 5S, 5C, iPod touch 5, iPad Air, iPad mini through adapter iPhone is not included to the order.