The Astronaut returns as Accutron's tribute to its own 1968 original, keeping the vintage model's core identity intact while updating it into a modern GMT watch. Both new colorways carry a bold, color-matched day/night bezel — green on the 26B205, red on the 26B206 — paired with silver-tone hour hands and markers for contrast against the dial.

The case measures 41mm with a 20mm lug width, built from silver-tone stainless steel and fitted with a rotating one-way bezel with an aluminum insert for tracking a second time zone at a glance. An anti-reflective domed sapphire crystal covers the dial, and the watch closes on a silver-tone stainless steel bracelet with an easy-release system and a deployant clasp secured by push buttons. Water resistance is rated to 100 meters, enough for swimming, showering, and snorkeling.

Inside is the Accutron Caliber 9058, an automatic "true" GMT movement that runs on a wound mainspring rather than a battery, kept wound by an oscillating weight that responds to the wearer's arm movement. It holds a 50-hour power reserve, beats at 28,800 vibrations per hour, and resists magnetic interference up to 16,000 A/m — well above what most automatic movements are rated for. Functions include the GMT hand, running seconds, and a date window positioned at 3 o'clock.