Seiko Cal. 3810 - 643

The 3810-643 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-cd5bb68eabaa]

Also known as: UFO, World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1988

Related Models

• Seiko 5660-486
• Seiko 7079-709
• Seiko 5667-855
• Seiko 6378-950
• Seiko 6282-530
• Seiko 5698-428
• Seiko 0767-478
• Seiko 5262-885
• Seiko 6196-894
• Seiko 6137-654
• Seiko 3886-824
• Seiko 6314-228