Seiko Cal. 3840 - 655

Released in 1966, the Cal. 3840 with design code 655 was part of Seiko's domestic market collection. With its 20mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-d1a59aec06ec]

Also known as: Navigator, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1966

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