Seiko Cal. 5657 - 301

The Seiko 5657-301 represents an important milestone in Seiko's 1982 lineup. Powered by the 5657 caliber with 20j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-e36e7f2d8db5]

Also known as: UFO, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1982

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