DSTE Pro VG-B30AM Vertical Battery Grip for Sony Alpha A200 A300 A350 SLR Digital Camera as NP-FM500H 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 two Li-lon batteries 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