Seiko Cal. 6381 - 554

This Spring Drive model from 1973 features a 34mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-ac4da9e5b586]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1973

Related Models

• Seiko 6625-385
• Seiko 5262-579
• Seiko 5255-806
• Seiko 6671-633
• Seiko 3877-820
• Seiko 6658-815
• Seiko 0757-337
• Seiko 6133-915
• Seiko 6635-711
• Seiko 6244-689
• Seiko 7032-620
• Seiko 7081-103