Seiko Cal. 3815 - 903

The 3815-903 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-53e65844d118]

Also known as: Pogue, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1965

Related Models

• Seiko 4584-787
• Seiko 6183-382
• Seiko 5211-539
• Seiko 5265-569
• Seiko 6293-763
• Seiko 4527-353
• Seiko 7027-575
• Seiko 5271-555
• Seiko 4512-615
• Seiko 6392-666
• Seiko 7019-243
• Seiko 3811-656