Seiko Cal. 7017 - 310

Seiko 7017-310

The 7017-310 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7017 caliber with 17j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-07f5b7abc1ff]

Also known as: Helmet, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
37mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
110m
Dial Color
Burgundy
Jewels
17j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1968

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