Seiko Cal. 5648 - 977

The Seiko 5648-977 represents an important milestone in Seiko's 1966 lineup. With its 22mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-bc65048ef7f9]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1966

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