Seiko Cal. 3813 - 636

This Solar model from 1965 features a 37mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-8356d583d963]

Also known as: Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1965

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