Seiko Cal. 5661 - 299

This Spring Drive model from 1973 features a 44mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-5d25e5349a86]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1973

Related Models

• Seiko 6344-748
• Seiko 7134-626
• Seiko 3832-397
• Seiko 7012-880
• Seiko 6220-459
• Seiko 7160-492
• Seiko 6644-835
• Seiko 5282-495
• Seiko 0775-486
• Seiko 7173-109
• Seiko 6668-122
• Seiko 4461-144