Seiko Cal. 5657 - 677

The 5657-677 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5657 caliber with 31j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-48cf4fb1d99b]

Also known as: Samurai, Monster

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1986

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