Seiko Cal. 5280 - 557

The Seiko 5280-557 represents an important milestone in Seiko's 1996 lineup. Powered by the 5280 caliber with 21j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-cc4fbeb67a3c]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1996

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