Seiko Cal. 5245 - 557

The Seiko 5245-557 represents an important milestone in Seiko's 1971 lineup. Powered by the 5245 caliber with 24j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-bff9482633f5]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1971

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