Seiko Cal. 5666 - 261

This Solar model from 1986 features a 37mm Two-Tone case. Powered by the 5666 caliber with 17j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-c16e116462e0]

Also known as: Sumo, Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1986

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