Introduction
The Acer OSK248 Wireless Speaker is a portable and wearable mini speaker designed for high-quality audio experiences. Featuring a built-in microphone, stereo surround sound, and a long-lasting battery, it is suitable for various outdoor activities such as sports, hiking, cycling, and gatherings. This manual provides essential information for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.

Image: The Acer OSK248 speaker, highlighting its surround sound capabilities and advanced 5.4 chip.
Setup
1. Charging the Speaker
- Connect the speaker to a power source using the provided Type-C fast charging cable.
- A full charge takes approximately 1.5 hours.
- The red light indicates charging, and the white light stays on when fully charged.

Image: Visual representation of the speaker's Type-C charging port and battery life details.
2. Pairing with a Device
- Long press the "play" button for 2 seconds to turn on the speaker. The red and blue lights will stay on for 1 second.
- On your device (e.g., smartphone), search for Bluetooth devices in the connection settings.
- Select "Acer OSK248" from the list of available devices to pair.
- The speaker uses a Wireless 5.4 intelligent flagship chip for stable connection up to 10 meters.

Image: Depiction of the speaker's 5.4 intelligent flagship chip for stable wireless connection.
3. Wearing the Speaker
- The speaker features a convenient back clip design.
- Attach the clip to your clothing, backpack strap, or other suitable surfaces for hands-free use.
- The stable wear design ensures it stays in place during activities like cycling or hiking.

Image: The speaker's clip-on design, illustrating how it can be attached.

Image: The speaker being worn on a backpack strap during a cycling activity.
Operating Instructions
The Acer OSK248 speaker is designed for intuitive control. Refer to the following instructions for basic operations:

Image: Detailed diagram illustrating the speaker's operation methods.
- **Power On:** Long press the "play" button for 2 seconds. The red and blue lights will stay on for 1 second.
- **Bluetooth Connection:** Search and operate in your phone's Bluetooth settings page after powering on.
- **Play/Pause/Answer/End Call:** Tap the "play" button once.
- **Next Track:** Long press the VOL+ button for 1 second.
- **Previous Track:** Long press the VOL- button for 1 second.
- **Volume Up:** Tap the VOL+ button once.
- **Volume Down:** Tap the VOL- button once.
- **Power Off:** Long press the "play" button for 3 seconds. The red and blue lights will stay on for 1 second. When the speaker is charging, the red light stays on, and after it is fully charged, the white light stays on.
Sound Features
- **Dual Speakers for Stereo Sound:** Equipped with full-range dual speakers and a low-frequency enhancement diaphragm. For optimal sound, keep the volume below 80% to ensure clear bass and treble.
- **Balanced Three-Frequency Sound:** Provides powerful bass, clear mid-range vocals, and crisp treble.
- **Surround Sound:** Features stereo-array architecture with real-time DSP spatial algorithms for an immersive audio experience.

Image: Illustration of the dual speaker system for enhanced stereo sound.

Image: A visual metaphor for the speaker's balanced three-frequency sound profile.
Maintenance
- **Cleaning:** Use a soft, dry cloth to clean the speaker's exterior. Avoid using harsh chemicals or abrasive materials.
- **Storage:** Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- **Battery Care:** To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use for extended periods.
- **Water Resistance:** The product is not waterproof. Avoid exposure to water or high humidity.
Troubleshooting
- **Speaker does not turn on:** Ensure the battery is charged. Connect to a power source and try again.
- **Cannot pair with device:**
- Ensure the speaker is in pairing mode (red and blue lights flashing after long pressing the play button).
- Make sure Bluetooth is enabled on your device.
- Move the speaker closer to your device (within 10 meters).
- Turn off and on both the speaker and your device's Bluetooth.
- **No sound or low volume:**
- Check the volume levels on both the speaker and your connected device.
- Ensure the speaker is properly paired.
- If the sound is distorted, reduce the volume on your device or the speaker.
- **Charging issues:**
- Verify the Type-C cable is securely connected to both the speaker and the power adapter.
- Try a different Type-C cable or power adapter.
- Ensure the power source is functional.
Specifications
| Feature | Detail |
|---|---|
| Brand Name | Acer |
| Model | OSK248 |
| Wireless Version | V5.4 |
| Connection Range | About 10 meters |
| Charging Interface | Type-C |
| Charging Time | About 1.5 hours |
| Speaker Unit | 28mm |
| Battery Capacity (Charging Case) | 800mAh |
| Battery Life (with Charging Case) | About 18 hours |
| Wearing Style | Back clip |
| Audio Coding | HFP, HSP, A2DP, AVRCP, SPP, rfcomm, pnp |
| Sound Mode | Stereo Sound Mode |
| Audio Crossover | Full-Range |
| Number of Loudspeaker Enclosure | 1 |
| Input Power | <25 W |
| Weight | 100g |
| Dimensions (approx.) | 32mm (width) x 75.73mm (height) |
| Cabinet Material | Plastic |
| Certifications | CE, FCC, RoHS |

Image: Comprehensive table of technical specifications for the speaker.

Image: Dimensional drawing of the Acer OSK248 speaker.
User Tips
- For the best audio experience, ensure the speaker is within the 10-meter connection range of your device.
- When using outdoors, consider the speaker's clip-on design for secure attachment to avoid accidental drops.
- To maximize battery life during long outings, fully charge the speaker before use.
- The built-in microphone allows for hands-free calls, making it convenient during activities where holding a phone is difficult.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Acer website or contact your retailer. Keep your proof of purchase for any warranty claims.





