Seiko Cal. 3850 - 730

The 3850-730 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-b3ddcc0704dc]

Also known as: Monster, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1970

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