Seiko Cal. 6261 - 503

The 6261-503 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6261 caliber with 18j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-828337bb2b6b]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1978

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