Seiko Cal. 3840 - 648

Released in 1980, the Cal. 3840 with design code 648 was part of Seiko's domestic market collection. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-bdafc434eeab]

Also known as: Silverwave

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1980

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