DSTE Pro IR Remote 100D Vertical Battery Grip for Canon EOS 100D Rebel SL1 SLR Digital Camera as LP-E12 Built in Infrared remote control function 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-ion 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.