1. Introduction
This manual provides instructions for the Acer OHR503 Wireless Earbuds. Please read this manual carefully before using the product to ensure proper operation and to maximize your listening experience. Keep this manual for future reference.
2. What's in the Box
The Acer OHR503 Wireless Earbuds package includes the following items:
- Acer OHR503 Wireless Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- User Manual
- Additional Eartips (various sizes)

Image: Acer OHR503 Wireless Earbuds and Charging Case. This image displays the black earbuds inside their charging case, highlighting their compact design.
3. Product Overview
The Acer OHR503 Wireless Earbuds are designed for high-fidelity stereo sound and comfortable wear. Key features include:
- Powerful Deep Bass: Equipped with oversized 8mm drivers for enhanced audio.
- Ultra Lightweight Design: Ergonomically shaped for a secure and comfortable fit during various activities.
- Clear Call Performance: Features noise-cancelling technology with advanced microphones and an AI algorithm for clear communication.
- Bluetooth 5.4: Provides fast transmission speeds and effortless pairing with iOS and Android devices.
- Long Battery Life: Offers extended usage time with the included charging case.

Image: Acer OHR503 Earbuds Performance Upgrade Features. This graphic illustrates the sound quality improvement from noisy ambient sound to clear human voice, along with features like surround sound, instant connection, V5.4 intelligent chip, and super long standby.

Image: Acer OHR503 Earbuds Directed Sound Transmission. This image shows an earbud in its charging case, emphasizing features like noise reduction, polymer diaphragm for high fidelity, and comfortable wear.
4. Setup
4.1. Initial Charging
Before first use, fully charge the earbuds and the charging case. Connect the USB-C charging cable to the charging port on the case and to a power source. The indicator light on the case will show charging status.
Video: Power, Comfort, and Crystal-Clear Sound. This video demonstrates the physical product, including the earbuds and charging case, and shows how to place the earbuds into the case for charging. It also highlights the compact design and the USB-C charging port.
4.2. Pairing with a Device
- Open the Charging Case: The earbuds will automatically enter pairing mode when the charging case lid is opened.
- Activate Bluetooth: On your smartphone, tablet, or other Bluetooth-enabled device, go to the Bluetooth settings.
- Select "Acer OHR503": Look for "Acer OHR503" in the list of available devices and select it to connect.
- Confirmation: Once connected, you will hear an audio prompt, and the indicator lights on the earbuds may change.
The earbuds offer wide compatibility with both iOS and Android devices.

Image: Acer OHR503 Earbuds Instant Connection. This image shows the earbuds in their open charging case, illustrating the automatic pairing feature upon opening the lid.
5. Operation
5.1. Wearing the Earbuds
Gently insert the earbuds into your ears, ensuring a snug and comfortable fit. The ergonomic design helps them stay securely in place, even during physical activity.

Image: Acer OHR503 Earbuds Comfortable Fit. This image shows a person wearing the earbud, emphasizing its ergonomic design for comfortable and stable wear.
5.2. Touch Controls
The earbuds feature touch controls for various functions. Refer to the quick start guide or product packaging for specific touch commands (e.g., play/pause, skip track, answer/end call, activate voice assistant).
5.3. Call Management
Utilize the noise-cancelling technology and advanced microphones for clear calls. You can adjust the volume of your own voice during calls for a natural conversation experience.
5.4. Battery Life
A single charge provides several hours of listening time. The charging case extends the total usage time significantly, allowing for multiple recharges on the go.

Image: Acer OHR503 Earbuds Super Long Standby. This image highlights the extended battery life, showing a single use duration of 5-6 hours and a total usage time of 30 hours with the charging case.
6. Maintenance
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry cloth. Avoid using liquids or abrasive cleaners.
- Eartips: Remove and clean the eartips periodically. Ensure they are dry before reattaching.
- Storage: When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Avoid Extreme Conditions: Do not expose the earbuds to extreme temperatures, humidity, or direct sunlight.
7. Troubleshooting
| Issue | Possible Solution |
|---|---|
| Earbuds not pairing | Ensure earbuds are charged. Open the charging case to activate pairing mode. Turn off and on Bluetooth on your device. Forget the device in Bluetooth settings and try pairing again. |
| No sound from one earbud | Place both earbuds back in the charging case, close the lid, then open it again. Check device audio balance settings. |
| Poor sound quality | Ensure earbuds are clean and eartips are properly seated. Move closer to your connected device to avoid interference. Check audio source quality. |
| Charging case not charging | Verify the USB-C cable is securely connected to both the case and the power source. Try a different charging cable or power adapter. |
8. Specifications
- Model Name: OHR503
- Connectivity Technology: Wireless (Bluetooth 5.4)
- Noise Control: Active Noise Cancellation
- Audio Driver Type: Dynamic Driver (8mm)
- Earpiece Shape: In-Ear
- Control Method: Touch
- Material: Plastic, Silicone
- Item Weight: 2.39 ounces
- UPC: 195133284950
9. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your product or visit the official Acer support website. The product typically comes with a standard manufacturer's warranty.
Customer Service: (978)230-8895 (US) Mon-Fri: 9am-6pm (EST)







