Seiko Cal. 6166 - 540

The 6166-540 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6166 caliber with 22j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-6e9759fa3028]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1986

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