Seiko Cal. 4430 - 642

The Seiko 4430-642 represents an important milestone in Seiko's 1984 lineup. It features a Silver dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-2c7133acad34]

Also known as: Bullhead, Flighty

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1984

Related Models

• Seiko 5618-966
• Seiko 3864-305
• Seiko 5253-394
• Seiko 0753-156
• Seiko 7116-757
• Seiko 4517-716
• Seiko 6645-864
• Seiko 5212-289
• Seiko 5647-880
• Seiko 4432-331
• Seiko 7148-551
• Seiko 6143-715