Seiko Cal. 7115 - 603

The 7115-603 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7115 caliber with 19j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-1da8ab733050]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1978

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