Zap Stun Gun Walking Cane

[RPB]

accidentally ran across this and curious

Zap Stun Gun Walking Cane
http://www.defensedevices.com/rattan-sword-cane.html" onclick="window.open(this.href);return false;
or
http://firstratesecurity.com/stuncane.html" onclick="window.open(this.href);return false;
Anyone know about these?
Thoughts?
Worth it?
just for dogs, or for defense?
I know nothing about stun guns, enough volts?
legal?