Seiko Cal. 6257 - 720

The 6257-720 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6257 caliber with 23j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-032f6b8c4ff3]

Also known as: Monster, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1987

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