Seiko Cal. 3847 - 640

This Hand-Winding model from 1969 features a 34mm Titanium case. Powered by the 3847 caliber with 19j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-80ad4a440229]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

130m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1969

Related Models

• Seiko 3826-485
• Seiko 4593-509
• Seiko 7027-861
• Seiko 6399-303
• Seiko 6144-563
• Seiko 6347-458
• Seiko 6217-820
• Seiko 7047-880
• Seiko 3899-281
• Seiko 6227-984
• Seiko 7052-994
• Seiko 5256-960