Seiko Cal. 3847 - 656

The Seiko 3847-656 represents an important milestone in Seiko's 1972 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-c6c36a06408d]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1972

Related Models

• Seiko 5251-943
• Seiko 6367-359
• Seiko 6170-737
• Seiko 3839-239
• Seiko 6232-855
• Seiko 3849-257
• Seiko 0757-784
• Seiko 7159-278
• Seiko 6293-495
• Seiko 0720-280
• Seiko 4425-856
• Seiko 5217-252