Seiko Cal. 3871 - 111

Seiko 3871-111

The Seiko 3871-111 represents an important milestone in Seiko's 1978 lineup. Powered by the 3871 caliber with 24j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-231f9551548f]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
12.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
120m
Dial Color
White
Jewels
24j
Frequency
36,000 bph
Power Reserve
54 hours
Year
1978

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