Seiko Cal. 6331 - 811

The 6331-811 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-1964030d247f]

Also known as: World Timer, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1999

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