Seiko Cal. 3820 - 530

Released in 1982, the Cal. 3820 with design code 530 was part of Seiko's domestic market collection. With its 20mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-225de2ceb119]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1982

Related Models

• Seiko 6178-528
• Seiko 5214-429
• Seiko 4448-780
• Seiko 6699-757
• Seiko 3876-335
• Seiko 4595-345
• Seiko 7025-576
• Seiko 7147-599
• Seiko 4569-557
• Seiko 7020-532
• Seiko 6355-798
• Seiko 4471-930