8X Series Big-Date Features

Design

The Astron dress watch has arrived

8X42 offers the remarkable ability to adjust to local time, anywhere* in the world, at the touch of a button and using just the power of light. With the addition of the big date window, the inclusion of a dual-time dial at the six o'clock position and new, slimmer hands, the new designs have a refinement that makes them as perfect for an evening out as they are for international travel. With several versions featuring roman numerals and with more components having mirror-finished surfaces, the Astron dress watch has truly arrived.

  • If there are changes in the region / time zone, manual time zone selection may be required.

Intuitive operation

The operation of the watch is made simple by the electronic setting function in the crown.

Hand-polished case

The cases are polished by hand to be distortion-free, using Seiko’s unique Zaratsu technique, so that there is sharpness in every light reflection.

Super-clear coating, super-hard coating

A super-clear coating, a super-hard coating has been applied on cases and bracelets.

  • It varies depending on the model.

Feature

The Astron dress watch has arrived

8X42 offers the remarkable ability to adjust to local time, anywhere* in the world, at the touch of a button and using just the power of light. With the addition of the big date window, the inclusion of a dual-time dial at the six o'clock position and new, slimmer hands, the new designs have a refinement that makes them as perfect for an evening out as they are for international travel. With several versions featuring roman numerals and with more components having mirror-finished surfaces, the Astron dress watch has truly arrived.

  • If there are changes in the region / time zone, manual time zone selection may be required.

The classic big date calendar

The new Astron 8X42 caliber features the classic big date window and the roman numerals for the first time in any Astron design while shares all the core characteristics of the hugely successful 8X calibers. The Astron Big-Date adds a new note of relaxed elegance to the Astron design.

GPS® Solar

The world’s first GPS solar watch

By connecting to the GPS network, the new Astron adjusts at the touch of a button to your time zone* and, by taking all the energy it needs from light alone, never needs a battery change.

  • If there are changes in the region/time zone, manual time zone selection may be required.

Automatic time adjustment

Whenever the dial is exposed to bright light, the watch automatically receives GPS signals. When the watch is concealed under a sleeve and the dial cannot receive enough light, the watch stores the time of the previous successful manual time adjustment or time zone adjustment, and automatically starts time adjustment at the same time.

High reception performance of an exclusive Seiko ring antenna

An exclusive Seiko ring antenna placed under the dial ring is suitable for automatic reception as it can easily receive signals regardless of posture.

In-flight mode

In order to avoid any interference with the operation of electronic devices in an airplane, in-flight mode is available when boarding a plane. In the in-flight mode, the GPS signal reception function will not work.

DST (Daylight Saving Time)

In areas where DST (Daylight Saving Time) applies, the time can be adjusted manually.