Seiko Cal. 5648 - 177

Released in 1970, the Cal. 5648 with design code 177 was part of Seiko's domestic market collection. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-38fba63ac307]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1970

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