Seiko Cal. 4477 - 770

Released in 1978, the Cal. 4477 with design code 770 was part of Seiko's domestic market collection. With its 21mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-accc41bcc962]

Also known as: Bellmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1978

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