This Battery Grip makes Camera photographing in a vertical position much easier and provides a better handling of your camera especially when you are using heavy lenses.
The battery grip provides more energy for your camera than a normal storage battery would. The battery compartment holds either two lithium batteries (original or third-party manufacturer) or a battery magazine for six AA Alkaline batteries.

Features:
Brand New Pro Battery Grip for SONY A77 SLR Camera
Hold 1 OR 2 NP-FM500H rechargeable Li-ion batteries.
Vertical shutter with half-press function. More comfortable vertical shooting.
Doubling the battery capacity of your camera， effectively extend your shooting time.
Significantly improves stability.
Signal transferring cable included.
Tripod screw mount.

Specifications:
Type: Battery grip for SONY A77
Compatible Battery (not included): 2x NP-FM500H battery pack
Power Switch: Camera's power switch
Color: Black

Package includes:
1x Battery Grip