Seiko Cal. 3844 - 634

The Seiko 3844-634 represents an important milestone in Seiko's 1979 lineup. Powered by the 3844 caliber with 30j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-dfea8e675fe6]

Also known as: Tuna, Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1979

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