The Vivitar Pro Series Multi-Power Battery Grip allows the Sony Alpha A77, A77 II and A99 II to be powered by two NP-FM500H batteries -- effectively doubling your shooting capacity. It also provides a comfortable vertical grip with an additional shutter release, front and rear control dials, and various control buttons for easy access to the camera functions when shooting vertically.

Features:

• Power On / Off Button
• Holds 2 NP-FM500H Li-ion batteries
• Adapter Plate Holds 6 AA Batteries
• Provides Extended Shooting Time
• Improves Stability
• Package Contents: Deluxe Power Grip and 1 Year Warranty Card