After the release of the iconic 6139 automatic chronographs by Seiko's Suwa division in 1969, the Daini division answered back one year later with their own iteration in the form of the 7017. If you compare both references, the 7017 is certainly thinner and smoother than the 6139.
Daini Chronographs were sold cheaper compared to Suwa's as they were initially intended for High school and college students, but don't judge too quickly, they featured a “flyback” function that allowed for the chronograph sweep to be reset without having to first stop the mechanism.
The mint blocky shape of the case is offset by contoured lines and smooth finishes that give it a great vintage feel. The Speed Timer logo in its signature orange sits on top of the 6 o'clock marker, and the Seiko 5 Sports logo below the 12 o'clock. As a JDM variant, the day can be toggled between English and Kanji and is paired alongside the date under a polished frame.
