Seiko Cal. 6678 - 425

The 6678-425 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6678 caliber with 36j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-a6e301b303bf]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1990

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