Seiko Cal. 5641 - 285

This Spring Drive model from 1989 features a 46mm PVD Black case. Powered by the 5641 caliber with 27j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-8286e74abbdc]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1989

Related Models

• Seiko 5266-851
• Seiko 5642-195
• Seiko 7133-334
• Seiko 5685-312
• Seiko 5296-385
• Seiko 4439-244
• Seiko 7195-887
• Seiko 6111-325
• Seiko 6113-452
• Seiko 6275-433
• Seiko 0789-667
• Seiko 5263-343