Seiko Cal. 7045 - 257

The 7045-257 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7045 caliber with 21j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-e0b1d3ab45a9]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1974

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