1.The D3000 is a battery grip for the NIKON D3000/D60/D40x/D40 DSLR
2.It can hold two lithium ion battery packs EN-EL9 or EN-EL9a.
3.It is equipped with an infrared vertical-grip shutter release
button to enable shooting in the same fashion as a horizontal grip.
But before you use the shutter release button on grip, you should
set the camera Release Mode to Quick-response Remote or
4.Type: D3000 Pro
5.Power Source: (1) one or two EN-EL9 or ENEL9a battery packs
7.Weight: approx. 154g (not including battery packs)