B07GY5C61P Vello BG-S6 Battery Grip for Sony a9 and a7 III Series Cameras

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Holds 2 NP-FZ100 Rechargeable Batteries, Extended Grip for Vertical Composition
Shutter Release Button for Vertical Use, Front and Rear Dials
C1 and C2 Function Buttons, AF-ON and AEL Buttons
Multi-Selector Joystick, Rubberized non-Slip grip
Threaded 1/4″-20 Tripod Socket, Strap Mount for Hand Strap