The Citizen Nighthawk BJ5 series with caliber B877 (part of the Eco-Drive lineup) is a versatile and functional aviation-style watch. Below are the key specifications based on the available data:

1. Case Dimensions:
   • Diameter: Approximately 42 mm.
   • Thickness: Around 12 mm.
   • Lug width: 22 mm (strap size).
2. Caliber and Movement:
   • Movement: Citizen's Eco-Drive B877, powered by solar energy.
   • Power Reserve: Typically 6 months when fully charged.
   • Features: Timekeeping, date display, and a slide rule bezel for calculations.
3. Materials:
   • Case Material: Stainless steel.
   • Crystal: Mineral glass.
   • Strap: Stainless steel bracelet with some light desk scratch (macro pictures enhance it) spare link of course available.
4. Special Features:
   • Slide Rule Bezel: Useful for aviation-related calculations (e.g., distance, speed, and fuel consumption).
   • Water Resistance: Up to 200 meters, suitable for swimming and snorkeling.
5. Sync and Accuracy:
   • Non-radio controlled but offers reliable analog timekeeping.

This watch has a classic design favored for its aviation-oriented features and robust build.

The watch is in very good and comes with its original case in letherette with PROMASTER LOGO, documents, tags, and everything provided at the time of purchase.

The photos are representative, and I apologize for any visible dust; the watch will be thoroughly cleaned before shipping.

Shipping is only via FedEx (insured upon request) or a similar courier. I do not ship via postal services.

To get a shipping cost estimate, please send me your location via PM, and I’ll provide the details.

I ask €185 and payment can be made via Paypal. Shipping cost are NOT included

Feel free to ask any questions.

Thank you for your attention!