Seiko Cal. 4523 - 643

The 4523-643 is a sought-after Solar piece from Seiko's golden era. Powered by the 4523 caliber with 33j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-b3f14c9c6d66]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1966

Related Models

• Seiko 5273-876
• Seiko 5626-464
• Seiko 0746-469
• Seiko 7152-128
• Seiko 0788-111
• Seiko 6656-931
• Seiko 6332-114
• Seiko 0732-889
• Seiko 3875-881
• Seiko 3868-973
• Seiko 4555-578
• Seiko 7118-251