What’s so special?

The Seiko 6139-7070, often nicknamed the “Baby Jumbo,” sits in one of the most important automatic chronograph families ever made. Seiko’s 6139 movement was among the earliest automatic chronograph calibers to reach the market, pairing a day-date display, both with quickset, with a practical 30-minute chronograph in a rugged late-1970s case shape.

The 7070 case gives the watch its charm: broad, purposeful, and unmistakably vintage without wearing as large as the full “Jumbo” models. It is a very wearable way to own a historically important Seiko automatic chronograph.

About this example

This example presents as a good to excellent vintage preowned Seiko 6139-7070 Baby Jumbo chronograph. This particular example features the rare blue dial that is highly sought after by collectors. The case, dial, hands, bezel, and bracelet show honest vintage character consistent with age, and are authentic for the reference. The overall look remains sharp and attractive. The automatic chronograph is offered freshly serviced by us, keeping excellent time, as photographed and ready for review.