Seiko Cal. 5638 - 865

Released in 1991, the Cal. 5638 with design code 865 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-082a3ce04fcd]

Also known as: World Timer, Emperor

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1991

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