Seiko Cal. 3815 - 135

This Spring Drive model from 1970 features a 43mm Titanium case. It features a White dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-6a63a928b43b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1970

Related Models

• Seiko 6237-656
• Seiko 5230-102
• Seiko 6157-461
• Seiko 7050-691
• Seiko 0791-764
• Seiko 6112-416
• Seiko 4585-516
• Seiko 6170-336
• Seiko 3874-930
• Seiko 5228-919
• Seiko 3868-100
• Seiko 4517-865