Seiko Cal. 4476 - 378

The 4476-378 is a sought-after Solar piece from Seiko's golden era. Powered by the 4476 caliber with 27j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-c39170901d9c]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1966

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