1. Pambuka
Thank you for choosing the SENTRY BT825 Evolution Rechargeable Headphones. These headphones are designed to provide a high-quality audio experience with the convenience of wireless Bluetooth connectivity and a built-in in-line microphone for hands-free communication. This manual will guide you through the setup, operation, and maintenance of your new headphones.

Image: SENTRY BT825 Evolution Rechargeable Headphones in their retail packaging, highlighting Bluetooth connectivity, folding design, and 8 hours playtime.
2. Isi Paket
Mangga dipriksa paket kanggo item ing ngisor iki:
- SENTRY BT825 Evolution Rechargeable Headphones
- Kasus Proteksi
- Kabel Pengisian USB
- Kabel Audio 3.5mm Kab
- Manual pangguna (dokumen iki)
3. Produk Liwatview
Familiarize yourself with the various parts and controls of your SENTRY BT825 Evolution headphones:

Gambar: A close-up view of the SENTRY BT825 Evolution headphones, showing the earcups and headband. The in-line microphone is integrated into the cable (not visible in this specific image but part of the product description).
- Tombol daya: Digunakake kanggo nguripake / mateni headphone lan kanggo pasangan Bluetooth.
- Tombol Volume Up/Trek Sabanjure: Nambah volume kanthi penet cendhak, skip menyang trek sabanjure kanthi penet dawa.
- Tombol Volume Down/Trek Sadurunge: Ngurangi volume kanthi penet cendhak, menyang trek sadurunge kanthi penet dawa.
- Tombol multi-fungsi (MFB): Puter/mandheg musik, njawab/mungkasi telpon.
- Mikropon: Integrated for hands-free calls.
- Jack Audio 3.5mm: Kanggo sambungan kabel.
- Port Pengisian USB: Kanggo ngisi daya baterei internal.
- Indikator LED: Nuduhake status daya, pangisi daya, lan Bluetooth.
4. Ngisi daya Headphone
Before first use, fully charge your headphones. The BT825 Evolution headphones feature USB connectivity for convenient charging.
- Connect the small end of the USB charging cable to the USB charging port on your headphones.
- Sambungake ujung kabel pangisi daya USB sing luwih gedhe menyang sumber daya USB (contone, port USB komputer, adaptor tembok USB).
- The LED indicator will illuminate during charging and change color or turn off once charging is complete.
- Ngisi daya kebak nyedhiyakake kurang luwih 8 jam wektu muter.
5. Masangake karo Bluetooth
Kanggo nyambungake headphone kanthi nirkabel menyang piranti:
- Priksa manawa headphone dipateni.
- Pencet terus tombol Daya nganti indikator LED kedhip-kedhip kanthi cepet (biasane biru lan abang), nuduhake mode pasangan.
- Ing piranti (smartphone, tablet, komputer), aktifake Bluetooth lan telusuri piranti sing kasedhiya.
- Select "SENTRY BT825" from the list of found devices.
- Once paired, the LED indicator will typically flash slowly or turn solid blue.
- The wireless range is up to 10 meters (33 feet).
Cathetan: Yen pasangan gagal, pateni headphone lan Bluetooth piranti sampeyan, banjur baleni langkah-langkah kasebut.
6. Nggunakake Headphone
Puter maneh Audio
- Puter / Ngaso: Pencet Tombol Multi-fungsi (MFB) sapisan.
- Volume: Pencet cendhak tombol Volume Up.
- Volume mudhun: Pencet cendhak tombol Volume Down.
- Trek Sabanjure: Pencet dawa tombol Volume Up.
- Lacak sadurunge: Pencet dawa tombol Volume Down.
Nangani telpon
The in-line microphone allows for hands-free calls when connected via Bluetooth.
- Wangsulan / Mungkasi Telpon: Pencet MFB sapisan.
- Nolak Telpon: Pencet terus MFB nganti 2 detik.
- Nelpon maneh nomer pungkasan: Pencet kaping pindho MFB.
7. Sambungan kabel
You can also use your SENTRY BT825 Evolution headphones with a wired connection using the included 3.5mm audio cable. This is useful when the battery is depleted or for devices without Bluetooth.
- Plug one end of the 3.5mm audio cable into the 3.5mm audio jack on your headphones.
- Plug the other end of the 3.5mm audio cable into the audio output jack of your device.
- The headphones will function as passive wired headphones. Note that the built-in controls and microphone may not function in wired mode, depending on your device.
8. Pangopènan
Kanggo njamin umur dawa lan kinerja headphone sing optimal:
- Resiki headphone kanthi rutin nganggo kain alus lan garing.
- Aja nyedhiyakake headphone ing suhu sing ekstrem, kelembapan, utawa sinar srengenge langsung.
- Aja nggunakake pembersih abrasif utawa pelarut.
- Store the headphones in the provided protective case when not in use.
- Aja nyelehake utawa tundhuk headphone ing impact kuwat.
9. Ngatasi masalah
Yen sampeyan nemoni masalah karo headphone, coba solusi ing ngisor iki:
- Ora Daya: Priksa manawa headphone wis kebak.
- Ora bisa dipasangake liwat Bluetooth:
- Priksa manawa headphone ana ing mode pasangan (LED sumunar kanthi cepet).
- Priksa manawa Bluetooth diaktifake ing piranti sampeyan.
- Pindahake headphone luwih cedhak karo piranti sampeyan (kurang saka 10 meter).
- Turn off and restart both the headphones and your device.
- Busak sambungan Bluetooth sadurunge ing piranti sampeyan.
- Ora Swara:
- Priksa level volume ing headphone lan piranti sing disambungake.
- Ensure the headphones are properly paired or the 3.5mm cable is securely connected.
- Coba muter audio saka sumber utawa aplikasi liyane.
- Mikrofon ora bisa digunakake:
- Ensure the headphones are connected via Bluetooth. The microphone may not work in wired mode.
- Priksa setelan mikropon ing piranti sing disambungake.
10. Spesifikasi
| Fitur | Spesifikasi |
|---|---|
| Nomer Model | BT825 |
| Unit Driver | 40 mm |
| Respon Frekuensi | 20Hz - 20kHz |
| Impedansi | 32 ohm |
| Sensitivitas | 110 +/-2 dB |
| Teknologi Konektivitas | Nirkabel (Bluetooth), Kabel (Jack 3.5mm) |
| Range Bluetooth | 10 Meter |
| Cord Length (3.5mm) | 4 ft / 1.2 m |
| Klebu Komponen | Kasus Proteksi |
| Fitur Tambahan | USB connectivity, In-line Microphone |
11. Video Produk Resmi
Watch video resmi iki kanggo visual liwatview of the SENTRY BT825 Evolution Rechargeable Headphones.
Video: Pameran video produk resmicasing the Sentry BT825 Evolution Rechargeable Headphones, demonstrating its features and design.
12. Warranty lan Dhukungan
Your SENTRY BT825 Evolution Headphones come with a garansi 60 dina saka tanggal tuku, nutupi cacat manufaktur. Mangga nyimpen bukti tuku kanggo claims babar pisan.
For technical support, troubleshooting assistance, or warranty inquiries, please contact SENTRY customer service through their official websitus utawa pengecer ngendi sampeyan tuku produk.