Seiko Cal. 6661 - 680

This Hand-Winding model from 1986 features a 41mm Two-Tone case. Powered by the 6661 caliber with 31j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-4081081c8c06]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1986

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