1. Bubuka jeung Leuwihview
This manual provides detailed instructions for the proper use and care of your Casio G-SHOCK GA-2100BM-7A8ER Dress Watch. Please read this manual thoroughly to ensure optimal performance and longevity of your timepiece. The GA-2100BM-7A8ER is a robust and stylish watch designed for daily wear, featuring both analog and digital displays, and G-SHOCK's renowned shock resistance and 200-meter water resistance.

2. Setélan
2.1 Initial Battery Installation/Check
Your Casio G-SHOCK GA-2100BM-7A8ER watch requires one C battery for operation. The watch typically comes with a factory-installed battery. If the display is blank or functions are erratic, the battery may need to be checked or replaced. It is recommended to have battery replacement performed by a qualified watch technician to maintain water resistance.
2.2 Setélan Waktos sareng Tanggal
Pikeun nyetél waktos sareng kaping:
- Pencét jeung tahan tombol Saluyukeun tombol (luhur kénca) dugi ka kode kota mimiti kedip-kedip. Ieu nunjukkeun modeu setélan.
- Ngagunakeun éta MODÉ button (bottom left) to cycle through the settings: City Code → DST (Daylight Saving Time) → 12/24-hour format → Seconds → Hour → Minute → Year → Month → Day.
- Ngagunakeun éta MULAI tombol (luhur katuhu) sareng CAHAYA button (bottom right) to change the flashing value. The MULAI tombol biasana ningkatkeun nilai, sareng CAHAYA button decreases it (or cycles through options).
- Sakali sadaya setelan leres, pencét tombol Saluyukeun tombol deui pikeun kaluar ti modeu setelan.

2.3 Pangaluyuan Pita
The watch features a durable resin band with a buckle clasp. To adjust the band for a comfortable fit, simply move the buckle pin to the desired hole on the strap. Ensure the watch is snug but not too tight on your wrist to allow for proper circulation.

3. Parentah Operasi
3.1 Navigasi Modeu
Pencét éta MODÉ tombol (handap kénca) pikeun ngagulung ngaliwatan modeu anu béda:
- Modeu Timekeeping: Displays the current time and date. This is the default mode.
- Mode Stopwatch: Used for measuring elapsed time. Press MULAI to begin/stop, Saluyukeun pikeun ngareset.
- Modeu Timer: A countdown timer. Set the desired time using Saluyukeun jeung MULAI, teras pencét MULAI pikeun ngamimitian.
- Mode Alarm: Set up to five daily alarms. Use Saluyukeun jeung MULAI pikeun ngeset waktos alarm.
- Modeu Waktu Dunya: View the current time in various cities around the world. Use MULAI to cycle through city codes.
3.2 Ngagunakeun Lampu Latar
Pencét éta CAHAYA button (bottom right) to illuminate the watch face for easy viewing in low-light conditions. The illumination duration can typically be adjusted in the settings mode.
3.3 Tahan cai
Your watch is water resistant to 20 BAR (200 meters). This means it is suitable for showering, swimming, and diving. However, do not operate any buttons while the watch is wet or submerged, as this can compromise the water resistance.
4. Pangropéa
4.1 beberesih
To clean your watch, wipe it with a soft, dry cloth. For stubborn dirt, use a soft cloth dampened with water and a mild neutral detergent, then wipe dry. Avoid using volatile agents like thinner, gasoline, alcohol, or chemical sprays, as they can damage the resin components and finish.
4.2 Ngagantian batré
When the battery power is low, the display may become dim or functions may cease. Replace the battery promptly. It is highly recommended to have the battery replaced by an authorized Casio service center or a professional watchmaker to ensure proper sealing and maintain the watch's water resistance.
4.3 Pancegahan Tahan Cai
- Ulah mencet tombol nalika jam tangan keur tilelep dina cai atawa baseuh.
- Avoid exposing the watch to hot water or steam (e.g., in a sauna or hot shower), as this can cause thermal expansion and contraction, potentially compromising seals.
- After exposure to saltwater, rinse the watch thoroughly with fresh water and wipe it dry.
4.4 Panyimpenan
When not in use for extended periods, store your watch in a dry, cool place away from direct sunlight and extreme temperatures. Avoid storing it near strong magnetic fields.
5. Cara ngungkulan
| Masalah | Mungkin Cukang lantaranana | Solusi |
|---|---|---|
| Tampilan arloji kosong atanapi taram. | Daya batre lemah. | Ganti batréna. Konsultasikeun ka teknisi jam tangan profésional. |
| Waktos atanapi tanggal salah. | Time/date settings are incorrect or have been reset. | Refer to Section 2.2 "Time and Date Setting" to adjust. |
| Kancing teu ngabales. | Watch may be in a locked mode, or internal malfunction. | Try pressing and holding Saluyukeun for a few seconds. If unresponsive, seek professional service. |
| Fogging inside the watch glass. | Parobahan suhu anu ujug-ujug atanapi résistansi cai anu turun. | If fog clears quickly, it's usually condensation. If it persists, water resistance may be compromised. Seek professional service immediately. |
5.1 Ngareset Jam Tangan
In some cases, a full reset may resolve minor issues. To perform a full reset, you may need to remove the battery and reinsert it. This should only be done by a qualified technician to avoid damaging the watch or compromising its water resistance.
6. Spésifikasi
- Jumlah modél: GA-2100BM-7A8ER
- Pabrikan: Casio
- Ukuran produk: 5.12 x 1.18 x 3.15 inci
- Beurat barang: 2.82 ons
- Tahan cai: 20 BAR (200 méter)
- Jenis Batré: 1 C battery (Note: Typically a button cell for G-SHOCK, but JSON states 'C battery'. Follow watch markings or consult professional.)
- tampilan: Analog sareng Digital
- Fitur: Shock Resistant, World Time, Stopwatch, Timer, Alarms, LED Light
7. Garansi jeung Rojongan
7.1 Garansi Internasional
Your Casio G-SHOCK GA-2100BM-7A8ER watch comes with a 2-year International Warranty. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims. The warranty does not cover damage resulting from improper handling, accidents, unauthorized repairs, or normal wear and tear.
7.2 Rojongan Palanggan
For technical assistance, warranty service, or inquiries regarding your watch, please contact your local authorized Casio service center or the retailer where the watch was purchased. You can find contact information for Casio service centers on the official Casio websitus: www.casio.com/support.





