Seiko Cal. 4476 - 616

This Hand-Winding model from 1968 features a 46mm Stainless Steel case. Powered by the 4476 caliber with 28j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-3ada12473c91]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1968

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