Seiko Cal. 5641 - 960

This Solar model from 1977 features a 38mm PVD Black case. Powered by the 5641 caliber with 29j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-631617f4b2bc]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1977

Related Models

• Seiko 5297-615
• Seiko 5289-670
• Seiko 4417-455
• Seiko 4481-441
• Seiko 5246-182
• Seiko 0732-662
• Seiko 7020-408
• Seiko 6381-911
• Seiko 6659-842
• Seiko 6193-968
• Seiko 5639-624
• Seiko 7094-852