Seiko Cal. 3840 - 710

Seiko 3840-710

Released in 1998, the Cal. 3840 with design code 710 was part of Seiko's domestic market collection. Powered by the 3840 caliber with 20j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-570268117d01]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement
Automatic
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
12.3mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
Green
Jewels
20j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1998

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seikata-wm-570268117d01