Seiko Cal. 4438 - 681

Seiko 4438-681

The Seiko 4438-681 represents an important milestone in Seiko's 1997 lineup. Powered by the 4438 caliber with 27j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-751c3883b5dd]

Also known as: Tuna, Helmet

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
9.6mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Champagne
Jewels
27j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1997

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seikata-wm-751c3883b5dd