Seiko

Calibre 4R36

Automatic

Specifications

Watch	Ø	Thickness	Lug-to-lug
Seiko Prospex Sea SRPD21 SRPD21	45 mm	13 mm	47.7 mm
Seiko Prospex Sea SRPD25 SRPD25	42.4 mm	13.4 mm	49.4 mm
Seiko Prospex Land SRPD31 SRPD31	43 mm	14.4 mm	43 mm
Seiko Prospex Sea SRPE03 SRPE03	45 mm	13.2 mm	47.7 mm
Seiko Prospex Sea SRPE93 SRPE93	45 mm	13.4 mm	—
Seiko Seiko 5 Sports SKX HDB004 HDB004	42.5 mm	14.2 mm	46 mm
Seiko Seiko 5 Sports Field HDB006 HDB006	41 mm	13.2 mm	48.5 mm
Seiko Seiko 5 Sports SKX SRPD51 SRPD51	42.5 mm	13.4 mm	46 mm
Seiko Seiko 5 Sports SKX SRPE51 SRPE51	40 mm	11.5 mm	44.6 mm
Seiko Seiko 5 Sports Field SRPG27 SRPG27	39.4 mm	13.2 mm	48.1 mm
Seiko Seiko 5 Sports Field SRPJ81 SRPJ81	36.4 mm	12.5 mm	44.4 mm
Seiko Seiko 5 Sports SKX SRPK29 SRPK29	38 mm	12.1 mm	44.2 mm
Seiko Seiko 5 Sports SNXS SRPK87 SRPK87	37.4 mm	12.5 mm	44.7 mm
Seiko Seiko 5 Sports SKX SRPL83 SRPL83	42.5 mm	13.9 mm	46 mm