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Seiko 6898

Cal. 6898 is an ultra-thin hand-winding movement with small seconds produced by Seiko for Credor since 2005. Although derived from the 1969 Cal. 68A, Cal. 6898 and other recent movements in the Cal. 68 family (Cal. 6890, 6899, and 6830) are quite different in design and execution. Notably, the balance wheel is moved opposite the winding crown thanks to the round rather than squared-off shape of the movement, and the bridges are redesigned for more graceful appearance.

Seiko 68 Family

CalibreProductionJewelsModelsNotes
68A1969-197226
68101973-1978
1991-1998
22HDF/HTB/ATB/CDF
SCVL
Tonneau shape
68302016-current22GBCCCredor tourbillon
68701993-current22GBAQ/GCAQCredor tonneau
68902009-current22GBBYCredor
68982005-current26GBBE/GCBECredor small seconds
68991996-current26GBBDCredor skeleton
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