Citizen Eco-Drive Nighthawk CA4377-53H


The Citizen Eco-Drive Skyhawk A-T collection redefined atomic timekeeping with radio-controlled accuracy perfection combined with Eco-Drive technology, making it the most accurate watch in the world. Radio signals are received both automatically and on-demand in North America, the United Kingdom, Europe Japan and/or China, depending upon the model.


  • Movement: B620
  • Case Width (MM): 43
  • Crystal: Mineral
  • Water-Resistance: WR200/20Bar/666ft [Swimming, Showering & Snorkeling]
  • Dial:  Black
  • Strap Type: Bracelet [Grey-Tone Stainless Steel]
  • Case Material: Grey-Tone Stainless Steel

Additional Functions

  • Date
  • 1/5 Second Chronograph
  • 12/24-Hour Time
Return Policy

If, for any reason, you are not completely satisfied with your watch purchase, you will receive a full refund with some exceptions.

To be eligible for a return, your item must be unworn, unused and in the same condition that you received it. You must include the original packaging, tags, paperwork, books, manuals, certification and/or anything else included in the package. All tags/labels must still be fully affixed to the item.

Return requests must be made within 14 days of receiving the item.

Shipping Details

$100-$249: Free Shipping via USPS Ground Advantage (3-5 Business Days). Includes tracking.

$250+: Free Shipping via USPS Priority (1-3 Business Days). Includes insurance and tracking. Signatures are required.

Upgraded USPS/UPS Options available at checkout.

International/Worldwide Shipping Options available at checkout.

Warranty Info

We are Authorized Citizen Dealers therefore the standard 5 Year Limited Warranty is included and valid.

Please visit for full details.