Série Noire

The NAGRA SN recorders (for “Série Noire”), in spite of their small size, produce exceptionally high quality recordings. It is much appreciated by reporters, who can record broadcast quality tapes and, at the same time, be more mobile.

It was originally ordered for the American Secret Service and was even taken to space as part of the Apollo missions.

https://www.nagraaudio.com/product/nagra-sn-family/