Seiko Cal. 3811 - 720

This Hand-Winding model from 1979 features a 35mm PVD Black case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-4d2d56759bbb]

Also known as: UFO, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1979

Related Models

• Seiko 7143-733
• Seiko 0727-116
• Seiko 6150-303
• Seiko 6124-449
• Seiko 6351-436
• Seiko 6129-197
• Seiko 6153-498
• Seiko 5232-645
• Seiko 7178-462
• Seiko 0792-638
• Seiko 3893-465
• Seiko 7124-796