1. Product Overview
The Acer 501 Bluetooth Earphones are designed for comfortable wearing and high-quality audio experience. Featuring a compact, lightweight in-ear design with a short handle, these wireless headphones are suitable for various activities including sports, running, and cycling. They offer directional sound, auto-connect functionality, and a digital battery display for convenience.

Figure 1: Acer 501 Earphones and Charging Case (Beige variant)
Video 1: Overview of Acer 501 Earbuds, showcasing their lightweight, compact, and stylish design, secure fit for running, sound quality, and long battery life.
2. Package Contents
Please check the package for the following items:
- Acer 501 Bluetooth Earphones (Left and Right)
- Charging Case
- USB Type-C Adapter (Charging Cable)
- User Manual (This document)
3. Setup and Pairing
3.1 Initial Charge
Before first use, fully charge the earphones and the charging case. Connect the provided USB Type-C cable to the charging case and a power source. The digital display on the case will indicate the charging status.
3.2 Power On/Off
- Power On: Open the charging case. The earphones will automatically power on.
- Power Off: Place the earphones back into the charging case and close the lid. They will automatically power off and begin charging.
3.3 Bluetooth Pairing
- Ensure the earphones are charged and inside the charging case.
- Open the charging case. The earphones will enter pairing mode automatically.
- On your mobile phone, tablet, or laptop, enable Bluetooth.
- Search for available devices and select "OHR501" from the list.
- Confirm pairing if prompted. Once connected, the earphones are ready for use.

Figure 2: Auto-Connect and Single/Dual Ear Switching
4. Operating Instructions
The Acer 501 earphones feature intelligent fingerprint touch control for various functions:

Figure 3: Touch Control Functions
| Function | Action |
|---|---|
| Play/Pause | Double click on either earphone |
| Next Song | Long press right earphone |
| Previous Song | Long press left earphone |
| Answer/Hang Up Call | Double click on either earphone |
| Reject Incoming Call | Long press any earphone for 2 seconds |
| Activate Voice Assistant | Triple tap on either earphone |
| Increase Volume | Double click right earphone quickly |
| Decrease Volume | Double click left earphone quickly |
4.1 Digital Battery Display
The charging case features a digital display that shows the remaining battery percentage of the case and the individual earbuds. This allows you to monitor power levels easily.

Figure 4: Power Display and Ultra-Long Standby
5. Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the earphones and charging case. Do not use abrasive cleaners or solvents.
- Storage: Store the earphones in their charging case when not in use to protect them and keep them charged.
- Water Resistance: The earphones are not waterproof. Avoid exposure to water, sweat, or moisture.
- Temperature: Avoid extreme temperatures. Do not expose to direct sunlight for extended periods or store in very cold environments.
6. Troubleshooting
- Earphones not pairing: Ensure both earphones are in the charging case, open the lid, and check if they enter pairing mode. Make sure Bluetooth is enabled on your device and try re-pairing.
- No sound from one earbud: Place both earbuds back into the charging case, close the lid, and then open it again to reset the connection. Check your device's audio settings.
- Charging issues: Ensure the USB Type-C cable is securely connected to both the charging case and the power source. Check the charging port for any debris.
- Poor sound quality/disconnections: Ensure the earphones are within the 10-meter communication distance from your device. Avoid obstacles that may interfere with the Bluetooth signal.
7. Specifications
| Feature | Specification |
|---|---|
| Product Name | True wireless headphones |
| Brand Name | Acer |
| Model | 501 (OHR501) |
| Product Color Options | Beige, Black, Purple |
| Material | Plastic |
| Communication | Wireless (Bluetooth) |
| Bluetooth Version | V5.4 |
| Communication Distance | About 10 meters (<10m) |
| Battery Capacity | 250mAh (Charging Case) |
| Battery Life (Earbuds) | Up to 5 hours |
| Standby Time | Up to 20 hours (with charging case) |
| Charging Interface | Type-C |
| Vocalism Principle | Dynamic |
| Number Of Drivers | 2 |
| Active Noise-Cancellation | Yes |
| Sound Isolating | Yes |
| With Microphone | Yes |
| Volume Control | Yes |
| Control Button | Yes |
| Support APP | No |
| Waterproof | No |
| Certifications | CE, FCC, RoHS |
| Earbud Weight | 3.6g (per earbud) |
| Package Dimensions | 14cm (L) x 9cm (W) x 4cm (H) |
| Package Weight | 0.103 kg |

Figure 5: Detailed Product Specifications
8. User Tips
- For optimal sound quality and noise cancellation, ensure the earbuds are properly seated in your ears. The ergonomic design is made to fit various ear shapes comfortably.
- Take advantage of the auto-connect feature by simply opening the charging case to quickly pair with your last connected device.
- The digital battery display on the charging case is useful for monitoring power levels, helping you avoid unexpected power loss during use.
- When using in public spaces, the sound isolating feature helps ensure your audio experience remains private.
- For extended listening sessions, remember the ultra-long battery life and the convenience of the charging case.
9. Warranty and Support
Acer provides comprehensive support for its products. For any issues or inquiries, please refer to the following:
9.1 Returns
Free returns are available within 90 days of purchase. Please contact customer service for details on the return process.
9.2 Delivery Guarantee
In case of delivery delays, package loss, or item damage, you may be eligible for a coupon or refund. Please refer to the specific terms and conditions provided at the time of purchase or contact customer service.
9.3 Product Authenticity
This product is certified original. For verification or concerns regarding authenticity, please contact Acer support.
9.4 Security & Privacy
Acer is committed to protecting your privacy. Your personal details are kept safe and secure and are not shared with third parties without your consent.





