Cittadino JY8035-04E
Citizen Promaster Navihawk Eco-Drive Pilot Watch User Manual
Brand: Citizen | Model: JY8035-04E
1. Introduzione e oltreview
The Citizen Promaster Navihawk A-T is a sophisticated pilot watch featuring Eco-Drive technology, powered by light, eliminating the need for battery replacement. It offers atomic clock synchronization for superior accuracy, radio-controlled timekeeping in multiple regions, and a range of advanced functions designed for aviators and enthusiasts.

Figure 1.1: Citizen Promaster Navihawk Eco-Drive Pilot Watch (Model: JY8035-04E)
Caratteristiche principali:
- Atomic Timekeeping Technology with Synchronized Time Adjustment Available in 43 World Cities.
- Eco-Drive Technology: Powered by light, never needs a battery.
- 1/100-Second Chronograph Measures up to 24 Hours.
- Perpetual Calendar.
- Dual Time (Second Time Zone) and Universal Coordinated Time (UTC) Display.
- 2 Alarms and 99-Minute Countdown Timer.
- Digital Backlight Display.
- Power Reserve Indicator.
- Pilot’s Rotating Slide Rule Dial Ring.
- Anti-Reflective Mineral Crystal.
- Water Resistant to 200 Meters.
2. Impostazione
Before initial use, ensure your watch is sufficiently charged and receiving the time signal. The Eco-Drive movement requires exposure to light for charging. A fully charged watch will operate for an extended period without further light exposure.
2.1 Ricarica iniziale:
Place the watch in direct sunlight or under a strong artificial light source. The charge level indicator on the dial will show the current charge status. Ensure the watch is fully charged before setting the time or attempting radio signal reception.

Figure 2.1: Before Use - Charging and Signal Reception Flowchart. This diagram illustrates how to check the movement of the second hand, verify reception status, and understand charging levels (Insufficient/Fully charged).
2.2 Time Signal Reception:
The watch automatically attempts to synchronize with the atomic clock signal daily. For optimal reception, place the watch near a window overnight. You can also perform an on-demand reception. Refer to the full user manual for detailed instructions on manual reception.
3. Funzionamento dell'orologio
The Promaster Navihawk A-T offers a variety of functions accessible through its crown and push-buttons. Understanding the different modes and their corresponding operations is key to utilizing the watch's full capabilities.
3.1 Setting the Time (TME Mode):
The time is primarily corrected using the digital display. While atomic timekeeping provides automatic synchronization, manual adjustments may be necessary in regions where radio waves cannot be received or for specific time zone changes.
- Pull the crown out to position 1 and turn to align the mode hand with TME (time mode).
- Press button (A) or (B) to call up the city name whose time you want to correct.
- Pull the crown out to position 2 to enter the time correction status. The second hand will move to the 12:00 position and stop.
- The home city display of digital display 2 will go off. The correction status for the daylight saving time setting is entered and ON or OFF flashes.
- Press the lower right button (A) to switch between setting (ON) and canceling (OFF) the daylight saving time.
- Press the upper right button (B) to enter the hour correction status. Turn the crown to correct the time.
- Press the upper right button (B) to enter the 12H/24H correction status. Press the lower right button (A) to switch between 12-hour and 24-hour clock.
- Return the crown to the normal position to complete the operation.

Figure 3.1: Time Setting Procedure Diagram. This diagram visually explains the steps for setting the time, including crown positions and button functions.
3.2 Altre funzioni:
The watch features a 1/100-second chronograph, perpetual calendar, two alarms, a 99-minute countdown timer, and a Universal Coordinated Time (UTC) display. The pilot's rotating slide rule dial ring can be used for various aviation calculations. Detailed instructions for each function are available in the comprehensive user manual.

Figure 3.2: Watch Diagram with Labeled Features. This image highlights key functionalities such as Atomic Timekeeping, Power Reserve Indicator, Digital Backlight Display, Chronograph, Perpetual Calendar, 99-Minute Countdown Timer, and Pilot's Rotating Slide Rule Dial Ring.
4. Manutenzione
Proper care and maintenance will ensure the longevity and optimal performance of your Citizen Promaster Navihawk A-T watch.
4.1 Ricarica:
As an Eco-Drive watch, it is powered by light. Regular exposure to light is essential to keep the watch charged and running accurately. Avoid prolonged storage in dark places.
4.2 Resistenza all'acqua:
The watch is water resistant to 200 meters (660 feet). This makes it suitable for professional marine activity and serious surface water sports, but not for diving. Ensure the crown is pushed in completely before exposing the watch to water.
4.3 Crystal Care:
The watch features an anti-reflective mineral crystal. While durable, mineral crystals can be susceptible to scratches. Avoid contact with abrasive surfaces to maintain clarity.
4.4 Pulizia:
Wipe the watch case and strap with a soft, dry cloth regularly to remove dirt and perspiration. For the rubber strap, a mild soap solution and water can be used, followed by thorough rinsing and drying.
5. Risoluzione Dei Problemi
If you encounter issues with your watch, consider the following common troubleshooting steps:
5.1 Time Synchronization Issues:
- Ensure the watch is sufficiently charged. A low charge can prevent successful radio signal reception.
- Place the watch near a window, away from electronic devices that might interfere with the signal.
- Attempt a manual time signal reception. Refer to the full user manual for the procedure.
- If "NO" is displayed for reception status, it indicates a signal reception failure. Try again in a different location or at a different time.
5.2 Watch Not Running or Incorrect Time:
- Check the power reserve indicator to ensure adequate charge. If low, expose the watch to light for charging.
- Verify that the crown is fully pushed in.
- Perform a full reset if necessary (refer to the comprehensive user manual for specific instructions, as this may vary by model).
For persistent issues or complex problems, it is recommended to consult the detailed user manual or contact Citizen customer service.
6. Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Numero di modello | JY8035-04E |
| Movimento | Eco-Drive (Caliber U680) |
| Materiale della cassa | Acciaio inossidabile placcato ionico nero |
| Materiale del cinturino | Black Rubber Strap |
| Cristallo | Anti-Reflective Mineral Crystal |
| Resistenza all'acqua | 200 metri (660 piedi) |
| Dimensioni | 4.33 x 3.94 x 8.27 inches (Product); 4 ounces |
| Cronometraggio | Atomic Timekeeping with Synchronized Time Adjustment (43 Cities) |
| Cronografo | 1/100-Second, up to 24 Hours |
| Calendario | Calendario perpetuo |
| Caratteristiche aggiuntive | 2 Alarms, 99-Minute Countdown Timer, Digital Backlight, UTC Display, Power Reserve Indicator, Pilot’s Rotating Slide Rule Dial Ring |
7. Garanzia e supporto
7.1 Informazioni sulla garanzia:
The Citizen Promaster Navihawk Eco-Drive Pilot Watch comes with a 5-Year Limited Warranty. Please refer to the warranty card included with your purchase for full terms and conditions.
7.2 Further Assistance:
For detailed operational instructions, advanced features, or specific troubleshooting, please download the official User Manual (PDF) from the Citizen website or via the link provided with your product documentation. If you require further assistance, please contact Citizen Service Center.
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