Sarrera
Welcome to the user manual for your Koss BT221i Wireless Bluetooth Ear Clip Headphones. These headphones are designed for comfort and convenience, featuring a secure ear-clip design, in-line microphone, and remote controls. This manual will guide you through the setup, operation, and maintenance of your new headphones.
Kutxan dagoena
- Koss BT221i Wireless Bluetooth Ear Clip Headphones
- Erabiltzailearen eskuliburua
- Kargatzeko kablea (Mikro USB)
- Kableen Kudeaketa Clip
Produktua amaituview

Figure 1: Koss BT221i Wireless Bluetooth Ear Clip Headphones. This image shows the overall design of the headphones, highlighting the ear clips and the connecting cable.

Figure 2: In-Line Microphone and Remote Control. This close-up shows the control unit on the headphone cable, featuring buttons for volume, play/pause, and call management.
The Koss BT221i headphones feature a lightweight, sweat-resistant design with pivoting ear clips for a secure and comfortable fit. The in-line remote provides easy access to music playback controls, volume adjustments, and call management functions, including a built-in microphone for hands-free communication.
Konfigurazioa
Entzungailuak kargatzen
Before first use, fully charge your headphones. Connect the supplied Micro USB charging cable to the charging port on the in-line remote and plug the other end into a USB power source. A full charge typically takes approximately 1.5 hours. The LED indicator will change to show charging status (e.g., red for charging, blue for fully charged).

Figure 3: Headphones connected to a charging cable, illustrating the charging process.
Bluetooth parekatzea
- Ziurtatu entzungailuak itzalita daudela.
- Press and hold the multi-function button (usually the center button on the remote) for approximately 5-7 seconds until the LED indicator flashes red and blue alternately, indicating pairing mode.
- Bluetooth gaitutako gailuan (smartphone-a, tableta, etab.), joan Bluetooth ezarpenetara eta aktibatu Bluetooth-a.
- Bilatu available devices and select "Koss BT221i" from the list.
- Once paired, the LED indicator on the headphones will flash blue periodically, and you will hear an audible confirmation.
Entzungailuak automatikoki saiatuko dira azken parekatutako gailura berriro konektatzen pizten direnean.
Funtzionamendu-argibideak
Entzungailuak jantzita
The BT221i features pivoting ear clips for a secure and comfortable fit. Gently place the ear clips over your ears, ensuring the ear pads rest comfortably on your outer ear. Adjust the pivoting mechanism to achieve the best fit and sound experience. The lightweight design ensures comfort during extended use and physical activity.

Figure 4: A woman wearing the Koss BT221i headphones, demonstrating the on-ear fit with ear clips.

5. irudia: Zehaztutako irudia view of the pivoting ear clip, designed for a secure and adjustable fit.
Basic Controls (In-Line Remote)
| Botoia/Ekintza | Funtzioa |
|---|---|
| Funtzio anitzeko botoia (Erdian) |
|
| Bolumena igo (+) |
|
| Bolumena jaitsi (-) |
|
Deiak egitea eta jasotzea
When connected to your smartphone, you can use the in-line remote to manage calls:
- To sarrerako dei bati erantzun, short press the multi-function button.
- To end an active call, short press the multi-function button.
- To sarrerako deia baztertu, press and hold the multi-function button for 2 seconds.
- The built-in microphone ensures clear voice transmission during calls.
Mantentzea
- Garbiketa: Garbitu entzungailuak oihal leun eta lehor batekin. Ez erabili produktu kimiko gogorrik edo material urratzailerik.
- Izerdiaren erresistentzia: The headphones are sweat-resistant, making them suitable for workouts. However, avoid submerging them in water.
- Biltegiratzea: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures. Use the included cable management clip to prevent tangling.

Figure 6: The cable management clip helps keep the headphone cable tidy and prevents tangling during storage or use.
Arazoak konpontzea
| Arazoa | Irtenbidea |
|---|---|
| Entzungailuak ez dira pizten. | Ziurtatu entzungailuak guztiz kargatuta daudela. Konektatu energia-iturri batera eta egiaztatu kargatzeko adierazlea. |
| Ezin da gailuarekin parekatu. |
|
| Soinurik ez edo bolumen baxua. |
|
| Uncomfortable fit or ear pads falling off. |
|
Zehaztapenak
| Ezaugarri | Xehetasuna |
|---|---|
| Ereduaren izena | BT221i Bluetooth Wireless Headphones |
| Bluetooth bertsioa | 4.2 |
| Bateriaren iraupena | 6 ordu baino gehiago |
| Kargatzeko Denbora | Approx. 1.5 hours (from customer review) |
| Kontrol mota | Bolumenaren kontrola, urrutiko agintea |
| Mikrofonoa | Lineako Mikrofonoa |
| Uraren Erresistentzia | Izerdiarekiko erresistentea |
| Belarrien Kokatzea | On Ear (Ear Clip) |
| Elementuaren pisua | 1.95 ontza (0.06 kilogramo) |
| Produktuaren neurriak | 0.98 x 0.98 x 0.98 hazbete |
Bermea eta Laguntza
Your Koss BT221i Wireless Bluetooth Ear Clip Headphones come with a Urtebeteko berme mugatua. For warranty claims or technical support, please visit the official Koss webwebgunera edo jarri harremanetan bezeroarentzako arreta-zerbitzuarekin. Gorde erosketaren egiaztagiria bermea balioztatzeko.
Produktuaren bideo ofiziala
Video 1: An official product video from Koss Stereophones showcasing the BT221i Wireless Bluetooth Ear Clips, highlighting features like the in-line mic, remote, and 6+ hour battery life.





