Focalecig just put up a 50w zero mod on their new arrivals page, check it out here:
http://focalecig.com/Product/SX-Zero-Modz-50W-clone-14205
Looks like it has the sx300 chip.
http://focalecig.com/Product/SX-Zero-Modz-50W-clone-14205
Looks like it has the sx300 chip.