Seiko Cal. 4492 - 257

Seiko 4492-257

The 4492-257 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4492 caliber with 30j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-73348aa14b67]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
36mm
Case Thickness
10.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Burgundy
Jewels
30j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1977

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seikata-wm-73348aa14b67