The Vello Accessory Kit for the Canon 7D includes a number items guaranteed to enhance your photographic experience. Always wise to have on hand, this kit provides you with an extra lithium-ion battery for the 7D. You never know when you might need a back-up. Another aid in the way of power is the included battery grip, which extends the battery life of the camera far beyond what the lithium-ion alone can provide. The wireless shutter release system enables more flexibility in shooting for long exposures or other times when a remote is beneficial. Finally, the lens cap holder has the best interests of your investment at heart by ensuring that you won't lose your lens cap, putting your lens in danger of scratches and dust.