Seiko Cal. 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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