Seiko celebrated its new Astron GPS solar caliber by releasing a limited edition whose defining characteristic is its dark mother-of-pearl dial.

The use of a colored mother-of-pearl is described as a silent tribute to the power of the technology beneath.

The GPS solar module requires so little power that it obtains all the energy it needs from light absorbed through the dial, even though it is made of this natural material.

The case and bracelet are made of titanium with a new super-hard black coating that is resistant to scratches.

The design was inspired by the idea of the earth at night, as it might be seen from a GPS satellite.

In addition to the limited edition, Caliber 8X22 is already available in a series of six designs. All are titanium-cased and there are three bracelet and three strap versions.

Caliber 8X22 world-time takes its place alongside the chronograph and dual-time calibers to make up the full Astron GPS solar collection of over 50 models.

This technology is a platform on which Seiko’s designers have already built, and will continue to build in the future, a new type of watch that is changing the world’s perception.

Caliber 8X22 is stated to be a notable advance in Seiko’s GPS solar technology. The case is slimmer than any other GPS solar watch, even slimmer than all other Astron models.

As a result, the antenna that receives the GPS signals is inevitably smaller, but Seiko has managed to increase the processing power of the circuit in the GPS module so that the sensitivity of the antenna is unchanged and the reception of GPS signals is easy for the world traveler.

With just one touch of a button, the new Astron adjusts to the local time in every time zone of the world.