About your post...

Cute toy... It reminds me of some of the girlie guns that are fashion statements - only worse.
IMO if you're going to carry a firearm - and that's what you are doing here - then why not carry a real one? A .22 calibre doesn't cut it unless you're dealing with an easily-discouraged bad guy, in which case maybe something other than a firearm discharge is appropriate.
Also... Remember Newton's 3rd law. If you can hold this thing like a cell phone and fire off rounds via the keypad w/o it flying out of your hands, then it isn't going to do jack. I'm a lot better off stopping them with my chi.

But... Cute toy!

By the way, it's things like these (believed to be manufactured in Croatia) that are the reason why shoes, cell phones, etc. must be X-rayed before going on a plane. It's not much in the way of being effective, but just effective enough to make law enforcement have to take it seriously.
- Bill