Seiko Cal. 4430 - 645

The Seiko 4430-645 represents an important milestone in Seiko's 1985 lineup. Powered by the 4430 caliber with 17j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-17949c13dfd6]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1985

Related Models

• Seiko 6161-243
• Seiko 4436-707
• Seiko 4520-845
• Seiko 5274-471
• Seiko 6242-584
• Seiko 7035-476
• Seiko 7036-831
• Seiko 5270-818
• Seiko 5238-351
• Seiko 4471-820
• Seiko 5236-906
• Seiko 7053-864