This is 254nm Shortwave handheld UV lamp with gooseneck to adjust the angle you like, 

which mainly used to find scheelite, zircon, diamond, calcium-uranium mica and other minerals with fluorescence.

Mineral rock viewing, demonstration photo shown with mineral rocks of various fluorescence intensity, 

in a completely dark room, held at a best distance of within 30mm, it will work best in dim and darkness !

in addition, it can also used for sterilization in daily use, such as keyboard, mouse, doorbell, 

tableware, elevator button, cellphone, masks etc.

Specifications:

Product name: 254nm UV lamp

Material: aluminum alloy

Lamp head size: 60x25mm

Power rate: 3 Watt

UV wavelength: 254nm UV light

Best illumination distance: 0-30mm

Voltage: AC 90-250V

product weight: 0.24KG

Power cable length: about 1.8 meter

Package Included:

1 x 254nm UV lamp