Features: There are three alarm methods of our nuclear radiation detector: sound, light and vibrations, which can better remind you and give you a better experience. Adopting hand-held portable design, very easy to carry and store with you, and it can be easily operated with one hand without any troublesome set up. With the function of automatically storing cumulative dose, even if the power is suddenly cut offs, the data will not be lost and can be stored for a long time. Using the LCD display, the working status of the nuclear radiation instrument is clear on the display, and you can quickly and accurately read the data you need. NR-750 has three measurement units: uSv/h, uGy/h, mR/h; NR-850/NR-950 has five measurement units: uSv/h, uGy/h, mR/h, cps, cpm, they can meet your daily needs for detecting radioactive radiation. Specifications: Material: Plastic Color: As The Picture Shows Package Weight: approx.200g Style Options: 3 Style are Available as Shown in the Picture. Size: approx.135x70mm/5.31x2.75in (More Size Detail, Please See Photo.) Package Includes: 1Pc Nuclear Radiation Detector note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!