Features: Handheld nuclear radiation detector: It is a portable and accurate nuclear radiation detector with built-in sensors, fast response and high accurate. Mainly used for monitoring x, β and γ rays. Two measuring mode: Digital geigers counter has real-times data update and timed detection function, and can save the historical record information of the last 10 measurements. Intelligent alarm: Enter the alarm setting option to set the dose rate alarm value. Alerting users via audios and visual alarms when preset thresholds are exceeded. Multifunctional geigers counter: Our the geigers counter has other various setting, such as timing measure function, deletes setting, calendar clock function, sleep setting and unit setting & language change, easy one-handed operation, etc. Application areas: Widely apply in the environment where existing ionizes radiation. Such as homes improvement radiation, geological survey, inspection vehicles, and so on. Specifications: Material: Plastic Color: As The Picture Shows Package Weight: approx.172g Size: approx.120x65x25mm/4.72x2.55x0.98in (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!