Introduction
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.
What's in the Box
- Koss BT221i Wireless Bluetooth Ear Clip Headphones
- User Manual
- Charging Cable (Micro USB)
- Cable Management Clip
Product Overview
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.
Setup
Charging the Headphones
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 Pairing
- Ensure the headphones are turned off.
- 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.
- On your Bluetooth-enabled device (smartphone, tablet, etc.), go to the Bluetooth settings and turn Bluetooth on.
- Search for 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.
The headphones will automatically attempt to reconnect to the last paired device when turned on.
Operating Instructions
Wearing the Headphones
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.
Figure 5: A detailed view of the pivoting ear clip, designed for a secure and adjustable fit.
Basic Controls (In-Line Remote)
| Button/Action | Function |
|---|---|
| Multi-function Button (Center) |
|
| Volume Up (+) |
|
| Volume Down (-) |
|
Making and Receiving Calls
When connected to your smartphone, you can use the in-line remote to manage calls:
- To answer an incoming call, short press the multi-function button.
- To end an active call, short press the multi-function button.
- To reject an incoming call, press and hold the multi-function button for 2 seconds.
- The built-in microphone ensures clear voice transmission during calls.
Maintenance
- Cleaning: Wipe the headphones with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Sweat Resistance: The headphones are sweat-resistant, making them suitable for workouts. However, avoid submerging them in water.
- Storage: 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.
Troubleshooting
| Problem | Solution |
|---|---|
| Headphones do not turn on. | Ensure the headphones are fully charged. Connect to a power source and check the charging indicator. |
| Cannot pair with device. |
|
| No sound or low volume. |
|
| Uncomfortable fit or ear pads falling off. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | BT221i Bluetooth Wireless Headphones |
| Bluetooth Version | 4.2 |
| Battery Life | 6+ Hours |
| Charging Time | Approx. 1.5 hours (from customer review) |
| Control Type | Volume Control, Remote |
| Microphone | In-Line Microphone |
| Water Resistance | Sweat Resistant |
| Ear Placement | On Ear (Ear Clip) |
| Item Weight | 1.95 ounces (0.06 Kilograms) |
| Product Dimensions | 0.98 x 0.98 x 0.98 inches |
Warranty and Support
Your Koss BT221i Wireless Bluetooth Ear Clip Headphones come with a One Year Limited Warranty. For warranty claims or technical support, please visit the official Koss website or contact their customer service department. Keep your proof of purchase for warranty validation.
Official Product Video
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.
