Seiko Cal. 5643 - 864

The Seiko 5643-864 represents an important milestone in Seiko's 1981 lineup. Powered by the 5643 caliber with 35j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-0b55d642ff8b]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1981

Related Models

• Seiko 6340-554
• Seiko 7154-154
• Seiko 7065-988
• Seiko 7039-553
• Seiko 6346-831
• Seiko 0765-391
• Seiko 4518-162
• Seiko 7174-647
• Seiko 7151-269
• Seiko 6215-824
• Seiko 5270-588
• Seiko 5234-112