Seiko Cal. 6231 - 770

The 6231-770 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6231 caliber with 22j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-f4062ce5f951]

Also known as: Tuna, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1999

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