Seiko Cal. 5640 - 237

This Solar model from 1997 features a 44mm Two-Tone case. Powered by the 5640 caliber with 32j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-0dea65619ec7]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1997

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