1. Color display, waveform display trend, easy to read data, simple operation.2. High , high stability, high sensitivity, instant response (3-5S).3. USB charging, usage time.4. Radiation assessment, when the radiation exceeds the standard, the sound, light and display color triple alarm.5. The alarm can be set arbitrarily. Small size, easy to carry.Basic parameters: supply: -in 3.7v 1000mAh polymer lithium batteryCharging voltage: 5VCharging current: greater than or to 1AIndicator light: green light on, charging. The green light turns off, fully .Display: 1.8-inch color TFT display, 4-level brightness adjustmenttechnical parameter:Detectable species: , , X-ray, iodine 131Test tube : j302 tubeReal-time dose range: 0.00-9.99mSv/hCumulative dose range: 0.00-500mSvSensitivity: 0.25cps/uSv/hEnergy response: 48keV-1.5MeVResolution: 0.01uSv/hError less than or to 10%Colour: WhiteMaterial: ABSSize: 89x50x18mmPackage Contents:1 x Radiation Tester1 x USB cableOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.