They should be selected to protect against the laser's power and wavelength.If this laser product is a projector for displays or laser shows, please be aware of the following:Class 3B visible-beam lasers are medium powered, from 5 to 499 milliwatts.

A Class 3B laser is not normally considered a skin or materials burn hazard. Dark materials which absorb heat, and lightweight materials such as paper and fabric, are most easily burned by visible laser beams.Laser glasses or goggles are suggested for lower-powered Class 3B lasers, and are recommended for higher-powered Class 3Bs. Date Added: 10/07/2019 by D***t 1 star for now as it arrived without the battery!! ANSI and IEC laser classification Class 1 Class 2 Class 3 Class 4 Notes Sub-class Class 1 Class 1M Class 2 Class 2M Class 3R Class 3B Class 4 U.S. FDA laser classification Class I No special FDA class Class II No special FDA class Class IIIa (definition is different but results are similar) Class IIIb Class IV Newer ANSI/IEC number classes are

Avoid viewing the Class 3B laser beam directly. Hazard increases if viewed with optical aids, including magnifiers, binoculars, or telescopes.

Holds its strength and brightness very well battery holds up great aswell, only down side about this that it did not light or burn well at all as it was shown in the pictures a bit disappointed on that. BUT NOWHERE DOES IT SAY (NOT INCLUDED) OR (SOLD SEPARATELY) I WOULDN'T HAVE ORDERED THE CHARGER TO CHARGE THE BATTERY, ...DUH!!!

Many Class 1 lasers have higher class lasers enclosed within a protective housing. However, if the laser "dot" is kept motionless on skin at close range, heat can be felt. All Class 1 lasers must be labeled.

ill get back to this after customer service gets back to me!

EVEN THOUGH IT CLEARLY SAYS WHAT BATTERY YOU USE WITH IT, BUT WHEN YOU ORDER SOMETHING ELSEWHERE IT WILL SAY (sold separately) IF IT'S NOT INCLUDED, WHAT KND OF CRAP IS THIS!!!

Lasers have been classified by wavelength and power into four classes and a few subclasses since the early 1970s.

IT DID NOT INCLUDE A BATTERY, EVEN THOUGH NO WHERE DID IT SAY THEY WERE SOLD SEPARATELY..., "I GUESS?"

Direct viewing of the Class 3B laser beam is hazardous to the eye and diffuse reflections of the beam can also be hazardous to the eye. Class IIIB Laser Pointer. CLASS 3B SAFE USE GUIDANCE - LASER PROTECTIVE EYEWEAR (GLASSES) 5

Class FDA Class IEC Laser Product Hazard Product Examples; I: 1, 1M: Considered non-hazardous. THIS IS THEIR INFO: using 18650 battery Bought this laser pointer a while back great laser!

It will be listed either in Arabic numerals (1 2, 3R, 3B, 4) or in Roman numerals (I, II, IIIa, IIIb, IV). Use of laser protective eyewear is suggested or recommended (depending on the laser's power level), as discussed elsewhere on this page.

If the Class 1 laser has an enclosed Class 3b or 4 laser, interlocks should be provided on any removable parts of the housing, or the laser should have a service access panel that is either interlocked or requires a tool for removal.

Class 3B laser pointer is a continuous laser of 5-500mw, which is dangerous directly in the beam, and it is dangerous to directly illuminate other people's eyes with the class IIIB laser.