Seiko Cal. 6610 - 989

The 6610-989 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-fa8673bd9249]

Also known as: Tuna, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1992

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