Seiko Cal. 5661 - 379

The Seiko 5661-379 represents an important milestone in Seiko's 1980 lineup. It features a Black dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-32ca48f20776]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1980

Related Models

• Seiko 5243-991
• Seiko 4464-432
• Seiko 7063-174
• Seiko 6181-483
• Seiko 4483-922
• Seiko 6162-450
• Seiko 5210-297
• Seiko 0763-269
• Seiko 6670-747
• Seiko 5688-751
• Seiko 5248-338
• Seiko 3867-491