Seiko Cal. 3871 - 665

Released in 1970, the Cal. 3871 with design code 665 was part of Seiko's domestic market collection. It features a Silver dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-4dc3e10631bf]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1970

Related Models

• Seiko 6671-680
• Seiko 7056-517
• Seiko 3885-381
• Seiko 7029-622
• Seiko 5217-498
• Seiko 6660-511
• Seiko 5224-358
• Seiko 7010-233
• Seiko 5652-663
• Seiko 3859-712
• Seiko 6167-169
• Seiko 4450-814