Seiko Cal. 3831 - 633

Released in 1971, the Cal. 3831 with design code 633 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-91bfdc266eac]

Also known as: Turtle, Rally

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1971

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