Seiko Cal. 6648 - 957

This Hand-Winding model from 1973 features a 45mm Stainless Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-ff77009932f8]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1973

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