Seiko Cal. 3831 - 228

The Seiko 3831-228 represents an important milestone in Seiko's 1978 lineup. Powered by the 3831 caliber with 24j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-7b51ed16d50c]

Also known as: Tuna, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1978

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