Seiko Cal. 3820 - 424

The 3820-424 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-e46c6de4cb9f]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1984

Related Models

• Seiko 0795-863
• Seiko 0771-943
• Seiko 4531-408
• Seiko 7019-302
• Seiko 6175-216
• Seiko 4544-547
• Seiko 6140-845
• Seiko 5245-465
• Seiko 7027-950
• Seiko 3891-155
• Seiko 4593-406
• Seiko 7084-527