Seiko Cal. 6648 - 837

Seiko 6648-837

The Seiko 6648-837 represents an important milestone in Seiko's 1997 lineup. Powered by the 6648 caliber with 17j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-342d19ac9c65]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
9.9mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Green
Jewels
17j
Frequency
28,800 bph
Power Reserve
66 hours
Year
1997

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seikata-wm-342d19ac9c65