Seiko Cal. 3865 - 520

The 3865-520 is a sought-after Solar piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-e5ccd2bc0db0]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1968

Related Models

• Seiko 4468-592
• Seiko 6682-295
• Seiko 7064-771
• Seiko 4584-212
• Seiko 3812-405
• Seiko 6132-840
• Seiko 0779-980
• Seiko 3823-498
• Seiko 6673-951
• Seiko 6638-925
• Seiko 4427-361
• Seiko 6288-619