Electro- Magnetic Cable Releases  Prevents motion effect of mechanical cable release. Connects to the electronic shutter release socket of the camera. For 645AFD and 645AF. It is available in two types: Electronic Cable Release 1M (approx 3ft long)  JP Code 969027 Mamiya Code 804821  Electronic Cable Release 5M (approx 12ft long JP Code 969028 Mamiya Code 314472