Seiko Cal. 5638 - 624

This Solar model from 1970 features a 35mm PVD Black case. Powered by the 5638 caliber with 36j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-56603a6b80cd]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1970

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