The Hurricane X3 is the original can-less electric duster, and it is powerful. BUT- The batteries don't last for ever, even the "new old stock" X3's you see will have degraded batteries. This X3 has a brand new battery!
Batteries are not commercially available, so you wont see other units out there with new batteries. This X3 is a unicorn, I operate an electronics service shop, and have built and installed a new battery pack using new modern high capacity cells.