Seiko Cal. 5643 - 300

Released in 1986, the Cal. 5643 with design code 300 was part of Seiko's domestic market collection. Powered by the 5643 caliber with 18j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-5ad00320cc71]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1986

Related Models

• Seiko 7139-141
• Seiko 4416-401
• Seiko 7152-333
• Seiko 7033-541
• Seiko 6346-241
• Seiko 0783-231
• Seiko 3891-546
• Seiko 6635-686
• Seiko 5692-884
• Seiko 0714-282
• Seiko 6164-317
• Seiko 6270-920