Cloupor ZNA50 50W 18650/18500 APV Mod:
http://www.cigabuy.com/cloupor-zna50-50w-1865018500-apv-mod-p-6219.html

Product Features:
Chip is 100% designed by cloupor
Cloupor ZNA50 Output Power: 7W-50W
Output Voltage : 3.6V—8.5V
It can be used to 0.3 - 3.3 ohm atomizer
Cloupor ZNA50 Reverse battery protection
Fits for 18650/18500 battery ( Battery is included)
Adjustable 510 pin