1. Introduction
Welcome to the user manual for your Calypso Sport Watch K5852. This guide provides detailed instructions on how to set up, operate, and maintain your watch. Please read this manual carefully to ensure proper use and to fully utilize all the features of your new timepiece.
The Calypso Sport Watch K5852 is designed for active lifestyles, offering durability and a range of digital functions. Key features include:
- Water Resistance up to 100 meters (330 feet)
- Durable Polycarbonate Case
- Digital functions: Stopwatch, Alarm, Dual Time Zone, Date Display
- Night Light for visibility in low-light conditions
- Classic stainless steel buckle strap for secure fit
2. Package Contents
Please check that your package contains the following items:
- Calypso Sport Watch K5852
- User Manual (this document)
- 1 C battery (pre-installed)
3. Watch Overview
3.1 Watch Components
Familiarize yourself with the buttons and display of your Calypso Sport Watch K5852:

Image 1: Front view of the Calypso Sport Watch K5852. This image shows the digital display indicating 5:30 and the 19th day, along with the various function labels and buttons on the watch face and sides. The watch is pink.

Image 2: The Calypso Sport Watch K5852 worn on a wrist. The digital display shows 1:53. This image provides a perspective of the watch's size and appearance when worn.
- LIGHT Button: Activates the night light for illuminating the display.
- MODE Button: Cycles through different modes (Time, Alarm, Stopwatch, Dual Time).
- ST/STP Button (Start/Stop): Used to start and stop functions like the stopwatch or to adjust settings.
- RESET Button: Used to reset values or confirm settings.
4. Initial Setup
4.1 Setting Time and Date
- From the normal time display, press the MODE button repeatedly until the time setting mode is activated (usually indicated by flashing digits).
- Use the ST/STP button to adjust the flashing digit (hours, minutes, seconds, year, month, day).
- Use the RESET button to move to the next digit or setting.
- Once all settings are correct, press the MODE button to exit the setting mode.
4.2 Setting the Alarm
- Press the MODE button until you reach the Alarm mode (indicated by 'AL' or an alarm icon).
- Press the ST/STP button to adjust the alarm hour.
- Press the RESET button to move to the alarm minute setting.
- Press the ST/STP button to adjust the alarm minute.
- Press the MODE button to confirm and exit the alarm setting mode.
- To turn the alarm on/off, typically press the ST/STP button while in Alarm mode.
5. Operating Instructions
5.1 Time Display Modes
Your watch supports both 12-hour (AM/PM) and 24-hour time formats. To switch between these formats, typically press the RESET button while in the normal time display mode, or during time setting.
5.2 Stopwatch Function
- Press the MODE button until you reach the Stopwatch mode (indicated by 'ST' or 'CHRONO').
- Press the ST/STP button to start the stopwatch.
- Press the ST/STP button again to pause the stopwatch.
- Press the RESET button to reset the stopwatch to zero.
- Press the MODE button to exit Stopwatch mode.
5.3 Dual Time Zone
The dual time zone feature allows you to keep track of time in another region simultaneously.
- Press the MODE button until you reach the Dual Time mode (indicated by 'DT' or 'DUAL').
- Press the ST/STP button to adjust the hour for the second time zone.
- Press the RESET button to move to the minute setting (if applicable).
- Press the MODE button to confirm and exit Dual Time setting.
5.4 Night Light Function
To illuminate the display in dark environments, press the LIGHT button. The light will typically stay on for a few seconds before automatically turning off.
6. Maintenance
6.1 Care and Cleaning
To keep your watch in optimal condition:
- Wipe the watch regularly with a soft, dry cloth.
- For stubborn dirt, use a slightly damp cloth with mild soap, then wipe dry.
- Avoid using harsh chemicals, solvents, or abrasive cleaners.
6.2 Water Resistance
Your Calypso Sport Watch K5852 is water resistant to 100 meters (10 ATM). This means it is suitable for swimming, snorkeling, and showering. However, it is important to:
- Do not operate buttons underwater.
- Avoid exposing the watch to hot water or steam (e.g., hot showers, saunas, hot tubs) as this can compromise the water seals.
- Ensure the crown (if present) is fully pushed in before any water exposure.
6.3 Battery Replacement
The watch uses 1 C battery. When the display becomes dim or functions become erratic, it is time to replace the battery. Battery replacement should ideally be performed by a qualified watch technician to ensure proper sealing and water resistance integrity.
7. Troubleshooting
If you encounter any issues with your Calypso Sport Watch K5852, please refer to the following common solutions:
- Watch not turning on or display is blank: The battery may be depleted. Replace the battery.
- Incorrect time or date: Re-enter the time and date settings as described in Section 4.1.
- Buttons not responding: Ensure the watch is not in a locked mode (if applicable) or try a soft reset by removing and reinserting the battery (if comfortable doing so, otherwise seek professional help).
- Water inside the watch: Immediately take the watch to a professional watch repair service. Do not attempt to dry it yourself.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | K5852 |
| Water Resistance | 100 meters (10 ATM) |
| Case Material | Polycarbonate |
| Strap Material | Polyurethane/Silicone (with stainless steel buckle) |
| Battery Type | 1 C battery (included) |
| Functions | Digital Time, Date, Day, Stopwatch, Alarm, Dual Time Zone, Night Light |
| Manufacturer | FESTINA LOTUS S.A. |
| Bluetooth Version | 5.0 |
| Bluetooth Frequency | 2.402 - 2.480 GHz |
| Maximum Bluetooth Transmit Power | 12 dBm |
9. Warranty and Support
9.1 Warranty Information
Your Calypso Sport Watch K5852 is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase or contact the manufacturer for specific terms and conditions. This warranty typically does not cover damage caused by improper use, accidents, or unauthorized repairs.
9.2 Customer Support
For further assistance, technical support, or warranty claims, please contact the manufacturer:
- Manufacturer: FESTINA LOTUS S.A.
- Website: www.festinagroup.com
10. Regulatory Information
10.1 Battery Warning
WARNING: KEEP OUT OF REACH OF CHILDREN. In case of ingestion, seek medical attention immediately. Button cell batteries can cause severe internal burns if swallowed.
10.2 WEEE and Battery Recycling
This product and its battery are subject to the Waste Electrical and Electronic Equipment (WEEE) Directive 2012/19/EU and the Battery Directive 2006/66/EC. Do not dispose of this product or its battery with unsorted municipal waste. Please use designated collection points for recycling electronic waste and batteries to protect the environment.
10.3 EU Declaration of Conformity
FESTINA LOTUS S.A. declares that the Calypso Sport Watch K5852 complies with the essential requirements and other relevant provisions of Directives 2014/53/EU (RED), 2014/30/EU (EMC), and 2011/65/EU (RoHS).





