Seiko Cal. 5638 - 975

The 5638-975 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5638 caliber with 32j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-d5fffcddea31]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1985

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