CASIO Module 2320 / 2321 / 2325 User Manual
Model Numbers: FS-01, SHN-100
Important Information
Battery
The battery in your watch is installed at the factory. If it runs low (e.g., backlight does not turn on, display is dim), replace it immediately at a CASIO dealer or distributor.
Water Resistance
Watches are classified by water resistance levels (I to V). Consult the table below for proper usage of your watch.
| Level | Marking on Case | Splashes, Rain, etc. | Swimming, Washing Car, etc. | Diving, Snorkeling, etc. | Scuba Diving |
|---|---|---|---|---|---|
| I | None | No | No | No | No |
| II | WATER RESISTANT | Yes | No | No | No |
| III | 50M WATER RESISTANT | Yes | Yes | No | No |
| IV | 100M WATER RESISTANT | Yes | Yes | Yes | No |
| V | 200M WATER RESISTANT | Yes | Yes | Yes | Yes |
| 300M WATER RESISTANT | Yes | Yes | Yes | Yes |
Notes for Corresponding Levels:
- Level I: Watches are not water-resistant. Avoid all moisture.
- Level III: Do not press watch buttons underwater.
- Level IV: If exposed to salt water, rinse thoroughly with fresh water and dry.
- Level V: Can be used for scuba diving (except for depths requiring a helium-oxygen mixture).
Note on Leather Straps: Some water-resistant watches have leather straps. Do not wear these watches while swimming or engaging in activities where the strap may be submerged in water.
Care of Your Watch
- Never attempt to open the case or remove the back cover.
- The gasket protecting the watch from water and dust should be replaced every 2-3 years.
- If moisture enters the watch, have it checked immediately by a CASIO dealer or distributor.
- Do not expose the watch to extreme temperatures.
- While designed for normal use, avoid rough handling and dropping the watch.
- Do not fasten the strap too tightly. A finger should fit comfortably between the strap and your wrist.
- When not in use, store the watch in a dry place.
- Clean the watch and strap with a dry soft cloth, or a soft cloth dampened with a mild neutral detergent solution. Never use volatile substances like gasoline, solvents, or spray cleaners.
- Avoid contact with gasoline, cleaning solvents, spray aerosols, adhesives, paint, etc. Chemical reactions from these materials can damage gaskets, cases, and finishes.
- Some models feature silk-screened designs on the strap. Clean these carefully to avoid damaging the graphics.
Notes on Materials
For Plastic Straps:
- A whitish powdery substance may appear on the strap. This is harmless and can be removed by wiping with a cloth.
- Sweat or moisture on plastic straps, or storage in high humidity, can cause damage or cracking. Wipe straps clean with a soft cloth to prolong their life.
For Fluorescent Cases and Straps:
- Prolonged exposure to direct sunlight can cause fluorescent colors to fade.
- Prolonged contact with moisture can cause fluorescent colors to fade. Wipe off any moisture immediately.
- Contact with other wet surfaces can cause discoloration. Keep fluorescent surfaces dry and away from other surfaces.
- Rubbing a fluorescent surface against another surface can transfer the fluorescent color.
General Information
CASIO COMPUTER CO., LTD. is not liable for any damages that may arise from the use of this watch, nor does it accept any claims from third parties.
Watch Face Diagram
Figure 1 shows the general view of the watch in Current Time Mode.
Button A: Cycles through watch modes. The transition sequence is: Current Time (digital display) → Current Time (with calendar) → Dual Time (time in another time zone) → Stopwatch → Current Time.
Button L: Pressing Button L in any mode activates the watch's backlight for 2 seconds.
Note: The analog dial and the digital display are independent and must be set separately.
Current Time Mode
Setting Electronic Display Time and Date
- In Current Time Mode, press and hold Button B. The seconds digits will flash.
- Use Button B to select the value to adjust: Seconds → Hours → Minutes → 12/24 Hour Format.
- To set seconds: Press Button A to reset seconds to 00. If seconds are between 30-59 when Button A is pressed, the minutes will increment by 1. If seconds are between 00-29, minutes will not change.
- To adjust minutes, hours, etc.: Press Button A to increase the value. Holding Button A allows for faster adjustment.
- If 12-hour format is selected, a "P" indicator appears for PM. No indicator is shown for AM.
- After setting the date and time, press Button B to return to Current Time Mode.
Setting the Analog Dial Time
- In any mode, press and hold Button H to set the analog dial time.
- Each press of Button H advances the time by 20 seconds. Three presses advance it by 1 minute.
Dual Time Mode
This mode allows you to track time in a different time zone. Setting the time is similar to Current Time Mode. The 12/24 hour format may differ from the format selected in Current Time Mode.
Stopwatch Mode
The stopwatch measures elapsed time. The maximum measuring interval is 59 minutes, 59.99 seconds.
Measuring Split Times:
- (B) Start → (B) Stop → (B) Restart → (B) Stop → (Hold B) Reset
Technical Specifications
| Feature | Specification |
|---|---|
| Accuracy (Normal Temperature) | ±30 seconds per month |
| Current Time Mode Display | Hour, Minute, Second, AM/PM, Month, Day, Day of Week |
| Time Format | 12/24 Hour format selectable |
| Calendar System | Auto calendar (up to February 28th) |
| Stopwatch Accuracy | 1/100 second |
| Stopwatch Max Range | 59 minutes, 59.99 seconds |
| Stopwatch Measurement | Lap times |
| Other | Backlight (Electro-luminescent panel), 2-hand analog dial |
| Battery Type | One SR920W battery |
| Battery Life | Approx. 3 years (based on 2 seconds of backlight use per day and 20 seconds of sound use) |
| Note | Backlight available on modules 2321 and 2325 only. |
Product Information
| Item | Details |
|---|---|
| Name | Wristwatch (Electronic / Electro-mechanical Quartz) (Men's/Women's) |
| Brand | CASIO |
| Manufacturer | CASIO COMPUTER Co.,Ltd. (CASIO Computer Co., Limited) |
| Manufacturer Address | 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan |
| Importer | OOO "Kasio", 127055, Moscow, Suchevskaya St., bldg. 27, str. 1, Russia |
| Country of Origin | Japan |
| Warranty Period | 1 year |
| Authorized Service Center Address for Claims | As specified in the warranty certificate |
| Compliance | Complies with GOST 26270-98 (Clause 4.35). Certificate of Conformity No. POCC JP. АЯ46.Д00003 |
