Contax Real-Time Winder W-3 lens mount_Hasselblad V The Nikon SD-9 is a

The Nikon SD-9 is a high performance battery pack for Speedlight SB-900 and SB-910 flashes

and video recording up to 4K at 30fps

so old that the apertures are marked in Universal System stops (they correspond to f8-f45)

but it does have Live View for precise manual focusing

Contax Real-Time Winder W-3 lens mount_Hasselblad V The Nikon SD-9 is aThe Contax Real Time Winder W 3 is designed for use with the Contax RTS II Quartz camera (sold separately). It provides a secure handgrip, a vertical shutter release button, and up to 3fps continuous operation. In excellent condition, with minor cosmetic wear, one small missing trim piece from the area around the vertical shutter release. Good working order.