Seiko Cal. 3857 - 670

The Seiko 3857-670 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-2e719619aa04]

Also known as: Panda, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1975

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