Seiko Cal. 5638 - 277

The 5638-277 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-f2f9ea2a2f05]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1989

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