Seiko Cal. 5638 - 709

This Solar model from 1978 features a 46mm Two-Tone case. Powered by the 5638 caliber with 35j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-81a2c79cb1f9]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1978

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