Seiko Cal. 3857 - 440

The Seiko 3857-440 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-f5ccbab6feb9]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1965

Related Models

• Seiko 5660-496
• Seiko 6259-183
• Seiko 6614-259
• Seiko 4573-494
• Seiko 6267-860
• Seiko 4538-929
• Seiko 6662-838
• Seiko 7097-746
• Seiko 3839-703
• Seiko 6686-303
• Seiko 6153-643
• Seiko 6170-413