Seiko Cal. 3871 - 271

The 3871-271 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3871 caliber with 25j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-818a450ea500]

Also known as: Sumo, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1966

Related Models

• Seiko 6144-448
• Seiko 3821-693
• Seiko 5262-871
• Seiko 4472-273
• Seiko 5669-537
• Seiko 5250-351
• Seiko 0773-476
• Seiko 6618-591
• Seiko 4589-943
• Seiko 4432-646
• Seiko 5214-438
• Seiko 7176-723