The battery grip provides perfect performance, no matter from the process, quality or performance and function, all built with the back, showing the most perfect and simple eleganr feature.It uses the same raw meterial with the device Photo boday, by applying sealant, it has the same waterproof and dustproof with the camera functionality. It is for Canon 5D Mark III with a vertical grip shutter button and also control multi-function and multi) founctional custom buttons feel the same with the horizontal shot. She designed exemplifies the professional operation and flexibility: use thick rubber meterial provides better handling of your camera. He holds 6 AA batteries or 2 LP-E6 Li-ion batteries. 1800 mAh rechargeable Li-ion battery provides 850-950 shoots, and if you are very familiar with the camera canon LP-E6 can then quite close to 1000 shoots with your smooth operation.