DSTE Pro D-BG5 Vertical Battery Grip for Pentax K-3 K3 SLR Digital Camera as D-LI90 A firm, comfortable grip for vertical-position shooting with the Camera. Buttons and controls are conveniently placed and easy to reach for greater comfort. Holds one Li-lon batteries or six AA Battery for extended shooting The rugged, but lightweight, body design has gasket-sealed controls to resist dust When using two batteries, the grip will automatically switch to the second battery if the first becomes depleted. Switching does not interrupt camera operation. Remaining power indicator