Seiko Cal. 5615 - 371

The 5615-371 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5615 caliber with 34j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-ab60d16bbe7a]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1999

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