Perfect handheld.

[ColdWelder]

Thanks! I guess it's a 3b then, like most other low powers. But I still cant find a specific power or wavelength allowed for aiming into airspace.

 

[qumefox]

In the US, 5mW is the legal maximum without needing a variance. And your also supposed to notify the FAA of lasers entering airspace.

However.. In practice, it doesn't really matter unless you 1) have neighbors that just don't like you. 2) live near an airport. 3) have law enforcement that has little else to do and likes demonstrating their authority. 4) illuminate aircraft.. intentionally or not.

I play with my high power lasers outdoors plenty without issues.

 

[sopark4000]

Thanks! I guess it's a 3b then, like most other low powers. But I still cant find a specific power or wavelength allowed for aiming into airspace.

Yea you really don't need to worry to much about using lasers outside. What qumefox said is good advice as far as making sure you don't get in to trouble while using lasers.