Multi Power Solution  
This battery grip takes 6x AA batteries or 2x Li-Ion rechargeables (EN-EL3e)

Vertical Shutter Release  button and main dial for convenient vertical shooting.

Programmable Timer Controller with LCD Display : 
- Exposure Length setting (max 99 hours) 
- Shutter Lag Time setting (max 99 hours) 
- Shooting Intervals setting (e.g. take exposure every 1/10/30 minutes) 
- Clock / Stopwatch / Calendar
- LCD back light

Other functions including:
Infrared receipt device, AE-L/AF-L button, threaded tripod jack. 

OEM pack.