Seiko Cal. 3857 - 363

Released in 1969, the Cal. 3857 with design code 363 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-9aa877ec8ece]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1969

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