Seiko Cal. 6177 - 101

The 6177-101 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6177 caliber with 20j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-3d084dca261e]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1976

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