Seiko Cal. 4431 - 971

The 4431-971 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-df250a58539d]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1999

Related Models

• Seiko 5248-157
• Seiko 7053-523
• Seiko 5636-667
• Seiko 4582-606
• Seiko 5222-877
• Seiko 6121-597
• Seiko 7033-963
• Seiko 3881-164
• Seiko 5668-899
• Seiko 0777-805
• Seiko 3858-556
• Seiko 0758-663