Seiko Cal. 3865 - 827

The Seiko 3865-827 represents an important milestone in Seiko's 1974 lineup. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-8c876852445a]

Also known as: Tuna, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1974

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