Seiko Cal. 6620 - 831

The 6620-831 is a sought-after Automatic piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-0482724a9d1c]

Also known as: Turtle, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1969

Related Models

• Seiko 3867-409
• Seiko 6123-742
• Seiko 0761-586
• Seiko 3880-220
• Seiko 3855-822
• Seiko 3843-952
• Seiko 4546-379
• Seiko 6669-219
• Seiko 5273-402
• Seiko 6390-343
• Seiko 3891-123
• Seiko 6696-902