High Speed Battery Pack MB-21

Grip portion (MB-21G)

Shutter release button lock lever

Shutter release button

Shutter lock index

Grip release lever

Battery chamber

Mounting screw

LED indicators

Guide pin

Battery check button

Battery holder (MS-21)

Bottom portion (MB-21B)

Remote terminal

Tripod socket

Battery selector

Lock screw

Nikon F4S, F4 Body Only instruction manual High Speed Battery Pack MB-21