Seiko Cal. 3811 - 161

The 3811-161 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-2f3c99a4842f]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1990

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