Seiko Cal. 5639 - 856

The Seiko 5639-856 represents an important milestone in Seiko's 1974 lineup. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-b05e3d7f687f]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1974

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