Seiko Cal. 7177 - 311

The 7177-311 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7177 caliber with 28j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-7b03910a14a3]

Also known as: Bullhead, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1993

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