Portable Size: This handheld nuclear radiation and electromagnetic radiation detector is portable in size and easy to carry, so you can put it in your bag and take it with you and grip it for use.Compact size, and portable, built-in high-accurate chip, practical and reliable to use. Lithium Battery: Built-in rechargeable lithium battery, low consumption and support for repeat use, economical and practical. Radiation Detect: The detector is used to measure X, γ and β rays radiation, it is optimal for measuring small changes in radiation levels, and has high sensitivity for most commonly used nuclides. Wide Application: This radiation tester can be widely used in nuclear power plants, accelerators, the iron & steel industry, the chemical industry, isotope applications, radiology laboratories and ambient monitoring of nuclear facilities., Manufacturer: Aundhegrtt