Seiko Cal. 3821 - 998

The Seiko 3821-998 represents an important milestone in Seiko's 1977 lineup. Powered by the 3821 caliber with 29j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-5c4a07b90640]

Also known as: Tuna, Navigator

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1977

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