Seiko Cal. 5666 - 381

The 5666-381 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-b322fb6a928d]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1967

Related Models

• Seiko 5270-759
• Seiko 0721-449
• Seiko 5626-520
• Seiko 4410-683
• Seiko 3826-170
• Seiko 3817-485
• Seiko 5247-382
• Seiko 6248-269
• Seiko 3851-834
• Seiko 4531-362
• Seiko 6327-761
• Seiko 5267-885