Seiko Cal. 6257 - 255

The 6257-255 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6257 caliber with 23j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-821aa5d20f17]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

23j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1990

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