Seiko Cal. 5641 - 181

The 5641-181 is a sought-after Quartz piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-4c90b8ffd394]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1982

Related Models

• Seiko 3883-389
• Seiko 5233-540
• Seiko 6147-903
• Seiko 4496-514
• Seiko 6137-673
• Seiko 6239-250
• Seiko 6378-920
• Seiko 5662-387
• Seiko 6258-825
• Seiko 6286-924
• Seiko 5639-590
• Seiko 5248-178