Seiko Cal. 7157 - 647

The Seiko 7157-647 represents an important milestone in Seiko's 1970 lineup. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-e09a5cca4ddd]

Also known as: Bellmatic, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

32j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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