Seiko Cal. 3855 - 721

The Seiko 3855-721 represents an important milestone in Seiko's 1972 lineup. It features a Navy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-a333d277d617]

Also known as: Shogun, Arnie

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1972

Related Models

• Seiko 5221-377
• Seiko 4454-170
• Seiko 6130-768
• Seiko 7179-235
• Seiko 0766-682
• Seiko 7170-545
• Seiko 3880-910
• Seiko 6124-653
• Seiko 6678-632
• Seiko 7063-206
• Seiko 5237-159
• Seiko 6390-494