Seiko Cal. 6641 - 287

This Quartz model from 1977 features a 35mm Two-Tone case. Powered by the 6641 caliber with 17j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-d75594ea9228]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1977

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