Seiko Cal. 4480 - 351

The Seiko 4480-351 represents an important milestone in Seiko's 1997 lineup. Powered by the 4480 caliber with 23j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-dca7dae576fc]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1997

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