Seiko Cal. 6657 - 744

The Seiko 6657-744 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-4f320b15d874]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1979

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