Seiko Cal. 3815 - 301

The 3815-301 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-7091b201442c]

Also known as: Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1985

Related Models

• Seiko 7026-941
• Seiko 4447-561
• Seiko 5264-988
• Seiko 6691-231
• Seiko 5661-274
• Seiko 4586-737
• Seiko 7191-366
• Seiko 6644-412
• Seiko 0788-500
• Seiko 6690-300
• Seiko 4571-214
• Seiko 6174-389