Seiko Cal. 5640 - 910

This Quartz model from 1998 features a 46mm Hardlex-Coated Steel case. Powered by the 5640 caliber with 23j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-8060679d0461]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1998

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