Seiko Cal. 3865 - 840

The 3865-840 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-90feb756070b]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1969

Related Models

• Seiko 7077-221
• Seiko 6621-769
• Seiko 3883-819
• Seiko 5654-558
• Seiko 0746-296
• Seiko 4491-155
• Seiko 5618-729
• Seiko 6296-760
• Seiko 3838-410
• Seiko 7155-494
• Seiko 3833-123
• Seiko 7081-944