Seiko Cal. 5641 - 992

Released in 1968, the Cal. 5641 with design code 992 was part of Seiko's domestic market collection. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-bdfc084a753f]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1968

Related Models

• Seiko 4463-933
• Seiko 4536-290
• Seiko 4444-952
• Seiko 6237-143
• Seiko 6339-558
• Seiko 6321-163
• Seiko 0784-102
• Seiko 5244-541
• Seiko 6135-549
• Seiko 6376-710
• Seiko 6354-973
• Seiko 5664-938