Seiko Cal. 6131 - 633

The Seiko 6131-633 represents an important milestone in Seiko's 1972 lineup. It features a Navy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-3b6958e11309]

Also known as: Goldfeather, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

Related Models

• Seiko 6336-227
• Seiko 0765-437
• Seiko 5611-225
• Seiko 4410-928
• Seiko 7145-829
• Seiko 3891-700
• Seiko 5685-888
• Seiko 4478-130
• Seiko 5642-487
• Seiko 6245-442
• Seiko 3891-915
• Seiko 7069-669