Seiko Cal. 5644 - 560

This Spring Drive model from 1998 features a 39mm Two-Tone case. Powered by the 5644 caliber with 23j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-6b9952be42d0]

Also known as: Tuna, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1998

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