Seiko Cal. 3840 - 831

Seiko 3840-831

This Hand-Winding model from 1994 features a 39mm Stainless Steel case. Powered by the 3840 caliber with 21j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-56c3a95e325e]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
10.3mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
150m
Dial Color
Green
Jewels
21j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1994

Related Models

seikata-wm-56c3a95e325e