Seiko Cal. 3810 - 639

The 3810-639 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3810 caliber with 20j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-4b75d7234c9f]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1994

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