Seiko Cal. 6655 - 451

The 6655-451 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6655 caliber with 18j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-6a2aba08712d]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1991

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