Seiko Cal. 3870 - 343

The 3870-343 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 3870 caliber with 32j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-8e710fe948a0]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1983

Related Models

• Seiko 4465-728
• Seiko 4443-206
• Seiko 4435-240
• Seiko 6159-606
• Seiko 6344-330
• Seiko 6166-514
• Seiko 6375-502
• Seiko 4461-205
• Seiko 0745-352
• Seiko 4497-636
• Seiko 5284-573
• Seiko 7060-211