Seiko Cal. 6657 - 308

The Seiko 6657-308 represents an important milestone in Seiko's 1984 lineup. Powered by the 6657 caliber with 17j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-41d231b3c482]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1984

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