Seiko Cal. 4581 - 428

Released in 1980, the Cal. 4581 with design code 428 was part of Seiko's domestic market collection. Powered by the 4581 caliber with 22j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-b312c0848e5f]

Also known as: Panda, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1980

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