Seiko Cal. 6331 - 169

Released in 1987, the Cal. 6331 with design code 169 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-ec421bceda13]

Also known as: Tuna, World Timer

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1987

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