Features: Portable Size: This nuclear radiation detector has the pen type design for you to carry it easily, you can even put it into your pocket to carry. Easy to Operate: One button open and measuring, you can get the results quickly and easily. Adopting OLED display screen to display the instantaneous dose, average dose and cumulative dose for you. If the detected data exceeds the preset value, it has the sound and light two alarm ways to alarm you. Built-in lithium battery to supplys power, you can recharge it in time. Wide Applications: This nuclear radiation detector can be widely used in nuclear physics, environmental monitoring and industrial fields. Specifications: Material: ABS Detectable types: , Y, X rays Measurement ranges: 0.05uSv-50mSv Battery: 1 * lithium battery, 300mAh (included) Measurement accuracy: -17% ~+25% based on 137Csy Working environment: temperature -20 C ~50 C, Humidity < 95% RH, no condensation Package size: 120 * 50 * 20mm / 4.7 * 2.0 * 0.8in Pacakge weight: 95g / 3.4ounce Packing List: 1 * Nuclear Radiation Detector