1. Color display, easy to operate. High sensitivity and instant response. Excellent algorithm, stable reading. 2. USB charging, longer use time. 3. Radiation assessment: sound, light, yellow and red alarms for excessive radiation. 4."Cluck" sound and flashing red light respond to ray entry. 5. It supports two modes of nuclear radiation measurement and electromagnetic radiation measurement, and long press the hold key to switch Colour:white Material:plastic Package Contents: 1 x host 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.