Seiko Cal. 5641 - 621

Released in 1965, the Cal. 5641 with design code 621 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-a749ddd3fd9c]

Also known as: Turtle, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1965

Related Models

• Seiko 6388-449
• Seiko 6345-356
• Seiko 5654-145
• Seiko 0747-776
• Seiko 4559-413
• Seiko 7161-768
• Seiko 7070-121
• Seiko 0724-643
• Seiko 5268-421
• Seiko 4431-949
• Seiko 3821-192
• Seiko 6274-922