Hello,
It does not have a usb port, it comes as the same kit as the 200 mW Red Laser does (i.e. a stand alone charger and an 18650 rechargeable lithium ion battery, as seen in the pics). As to the CR123A's, I'm not sure to be honest.... I've never attempted to use anything other than the rechargeable 18650 lithium ion that comes with the laser.