VC-C77AM Vertical Grip Accessory. Ideal for shooting with the Sony SLT-A77V in vertical position, this gives you a firm grip on your camera with shutter button at your fingertip and controls conveniently positioned for comfortable shooting. The VG-C77AM also combines rugged design, dust and moisture resistant design for highly reliable under various conditions, and built-in compartment for two NP-FM500H InfoLITHIUM batteries (sold separately) with Stamina power of up to 1, 060 shots. 1 Readout shows in percentage about how much battery power remains and which battery is in use. In serious photography, this is a must for your Sony SLT-A77V.