Alpha
Eta/Peseux 7001 clone, 3/4 bridge, stop-second mechanism, ca 75 % of the parts made by Nomos
Beta
Alpha + date module
Gamma
Alpha + power reserve indicator/floating barrel
Delta
Alpha + date module and power reserve indicator/floating barrel
Epsilon
Alpha + automatic winding module
Zeta
Alpha + date and automatic winding module
Xi
Alpha + worldtime module and automatic winding module
DUW 4301
Alpha + power reserve indicator/floating barrel and inhouse escapement (Nomos swing system)
DUW 4401
Alpha + date module, power reserve indicator/floating barrel and inhouse escapement (Nomos swing system)
DUW 5201
Alpha + worldtime module, automatic winding module and inhouse escapement (Nomos swing system)
All modules developed and produced by Nomos
DUW 1001
Inhouse, double barrels and 84 hours power reserve, swan neck regulator, power reserve indicator
DUW 2002
Inhouse, double barrels and 84 hours power reserve, swan neck regulator, tonneau