That laser, should you use it for extended periods of time, (hours) WILL cause permanent eye damage. It is of class IIIb, therefore you and all who use it are required by law to wear proper filter eyewear. Figure $40 per person. Oh, and I don’t see a keylock on that? Must be European.

Those lasers are seriously regulated in the US. Of course, a DVD drive uses a 200+mW Red diode, that is far less fragile that that DPSS greenie… Drop it once and its dead, those neodymium doped yttrium orthovanadate pump setups are extremely shock sensitive. Alignment is key, and once its misaligned it fries the inside from the heat.

PS: NEVER rate lasers by visibility. Rate it by mW and beam divergence.