Features:
Clearly marked voltage setting that you will not need a magnifying glass to see.
3.2v to 4.8v smooth turning voltage adjustment dial.
Short Circuit protection
5 Click on off button
Works with 510 and EGO gear
Smoktech eGo VV Battery 650mah, 900mah,1100mah,1300mah
Charge With eGo Charger Only

Specifications:
smoktech ego vv winder
ego c twist battery 1100mah
650/ 900/ 1100/1300mah batt
Variable voltage battery
CE,ROHS