Seiko Cal. 3820 - 318

This Hand-Winding model from 1968 features a 37mm Stainless Steel case. It features a Silver dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-28b7ee0eaac3]

Also known as: UFO, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

Related Models

• Seiko 5265-808
• Seiko 5669-780
• Seiko 4415-650
• Seiko 6325-604
• Seiko 0783-153
• Seiko 6666-729
• Seiko 7056-418
• Seiko 4558-486
• Seiko 4558-853
• Seiko 6364-615
• Seiko 6162-480
• Seiko 5286-319