Seiko Cal. 6616 - 615

The 6616-615 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6616 caliber with 25j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-ff5cbc7d4c10]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1981

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