Για πολλά μοντέλα της seiko έχει καθιερωθεί να αναφέρονται με nicknames.
Seiko SNM011 / SNM009 aka
Samurai Seiko SNM015 aka
Black NinjaSeiko SKX007 / SKX009 aka
007 / Pepsi Seiko SKZ209 aka
AtlasSeiko SKXA53 aka
Black BulletSeiko SHC057 / SHC0561 aka
Buzzsaw Seiko SBBN011 aka
Darth VaderSeiko SBDS001 aka
Flightmaster (Official Name)
Seiko SKXA49 / SKXA47 aka
Black Knight / White Knight Seiko SBDX007 aka
Landmaster (Official Name)
Seiko SBDX001 aka
MarineMaster (Official Name)
Seiko SKX781 / SKX779 aka
Orange Monster / Black Monster Seiko SNZF45 aka
Baby MonsterSeiko SBBN007 aka
Tuna Seiko SBDC003 / SBDC001 aka
Sumo Seiko SNZF17 aka
Sea UrchinSeiko SRP043 aka
Spork Seiko SNKF11 aka
Big Freakin SeikoSeiko 6138-0040 aka
BullheadSeiko 6138-3002 aka
JumboSeiko 6138-8020 aka
PandaSeiko 6138-0011 aka
UFOSeiko SKZ255 aka
FrankenmonsterSeiko SBDC007 / SBDC009 aka
Shogun Seiko 6309-7040 aka
TurtleSeiko SNZH55aka
Seiko fifty fathoms