This is the genuine joyetech battery MOD tube with "eGo-T" "Joyetech" logo and laser branding in the bottom steel plate. There is a spring inside. 

Included is the Joyetech eGo-T battery MOD control unit with"5-click protection". Generally, it is shipped in the off position. In off position, the eGo-T will not function even when pressing the button. To turn on battery, press manual button 5 times within 2 seconds. You will see white LED flash. To turn off battery, press manual button 5 times within 2 second as well, the white LED will flash!  "5-click protection" can protect the battery from being activated when you do not want or do not use it. No more firing in your pocket! 

Please be advised that some colors are not exactly same as eGo-T/eGo battery owing to the material difference. 

Includes

1 Genuine Joyetech 18650 MOD Tube

1 Genuine Joyetech Mod Controller Unit

Uses 18650 batteries.  Strongly suggest Protected 18650 batteries such as this one here.

http://www.vaporgalaxy.com/TrustFire-Protected-3000mAh-37V-18650-Battery-TF186503000MAHP.htm

Battery is not included.  Must be purchased seperate.