Citizen A-T 4117-56H “Nighthawk” Perpetual Chrono Radio Controlled – BNIB - $225

The watch is brand new, never worn and never sized. If you look closely at the photos, you will see that it still has the protective film from the factory.

This is quite simply an extraordinary watch. When I first started collecting, I soon discovered Citizen’s radio controlled (RC) watches and have been hooked ever since. If I hadn’t not succumbed to the highly contagious WIS “Automatic Watch Syndrome”, doubt that I would wear anything but a Citizen RC watch. The engineering and build/finish is superb. Only reason for selling is that I have too many and others that I prefer to wear.

This watch is aimed primarily at the US and western European markets with 5 designated time zones with support for the broadcast from towers in US and Germany. Saying that, you can set alternate time zone for any locale but they will not update automatically at night.

The Nighthawk is an upgraded version of the AT400X Perpetual Chrono series. In comparison, the Nighthawk has a higher grade bracelent/clasp and has a rotating inner bezel operated by a secondary crown at the 8 o’clock position.

Key features:
  • Citizen E650 movement – supports reception from US and German broadcast towers.
  • Chronometer and alarm
  • Day / date with perpetual calendar that supports automatic adjustment for daylight savings time.
  • 24 hour sub dial
  • Rotating inner bezel (see second crown at 8 o’clock position)
  • Superluminova lume on minute/hour hand and hour indices
  • Solar / light powered “Eco-Drive” with power/charge indicator
  • Dimensions – Case: 44mm X 14mm (excluding crown), Lugs: 24mm
  • 200M Water Resistant
  • Sapphire Crystal
  • Black Ion Plated
  • Stainless “president” style bracelet is excellent quality with fitted solid end pieces and fold over deployant clasp / machined hinge. 24mm at lug tapering to 18mm at the high quality hinged clasp.


Final thought: The power cell in the watch is expected to have a useful life of 15-20 years. That means that once the watch is set properly, it will provide accurate time to the split second with correct day/date for 15-20 years without further adjustment. All that is needed is regular exposure to a light source and leave in a location that can pick up the timing signal at 2am in the morning. That’s it.
The watch includes owner's manual and original OEM packaging (inner and outer box).

Price is $225 which includes Paypal fees and USPS Priority shipping. CONUS only.

Although I haven’t been very active for awhile, have excellent feedback if you search my user ID within the Watch Deals and Feedback forum https://forums.watchuseek.com/f63/