Seiko Cal. 3865 - 143

The Seiko 3865-143 represents an important milestone in Seiko's 1997 lineup. It features a Navy dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-2b391d25f52f]

Also known as: Helmet, World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1997

Related Models

• Seiko 4469-422
• Seiko 6142-530
• Seiko 4459-565
• Seiko 7174-554
• Seiko 4457-205
• Seiko 3845-202
• Seiko 6150-931
• Seiko 6650-253
• Seiko 6614-746
• Seiko 4579-549
• Seiko 6144-313
• Seiko 7080-298