1. Introduction
Thank you for choosing the Monster Open Ear AC210 OWS Wireless Bluetooth Earphones. These earphones are designed to provide a comfortable, high-quality audio experience with an open-ear design for situational awareness, making them ideal for outdoor activities and daily use. This manual will guide you through the setup, operation, and maintenance of your new earphones.
Monster AC210 OWS Fully Open Earphones with charging case, showing black and white color options.
2. Package Contents
Please check the package contents to ensure all items are present:
- Headphones (Left and Right) x 2
- Charging Compartment x 1
- Packaging Box x 1
- USB Charging Cable x 1
- Instructions Manual x 1
- Warranty Card x 1
- Certificate of Conformity x 1
Inventory list image, showing all items included in the package.
3. Setup
3.1 Charging the Earphones and Case
- Place the earphones into the charging case.
- Connect the provided USB Type-C charging cable to the charging port on the case and a suitable power source.
- The indicator light on the charging case will show the charging status. A full charge for the case and earphones typically takes about 1 hour.
The earphones provide approximately 5 hours of music playback at 50% volume, and the charging case extends the total playback time to about 20 hours, allowing for 3 full charges of the earphones.
Earphones in charging case, illustrating battery life and charging.
3.2 Wearing the Earphones
The AC210 features an OWS (Open Wearable Stereo) fully open, ear-mounted design. This design ensures comfort and allows you to remain aware of your surroundings.
- Gently hook each earphone over your ear, ensuring the speaker part is positioned near your ear canal without directly entering it.
- Adjust for a secure and comfortable fit. The lightweight design (5.5 grams per ear) minimizes fatigue during prolonged wear.
The lightweight, fully open design of the Monster AC210 for comfort and outdoor safety.
3.3 Bluetooth Pairing
The earphones utilize Bluetooth 5.4 for a fast and stable connection.
- Open the charging case. The earphones will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select 'Monster AC210' from the list of devices.
- Once connected, you will hear an audible confirmation, and the indicator light on the earphones will change.
Directional sound transmission technology for optimal audio delivery.
4. Operating Instructions
4.1 Touch Controls (MFB - Multifunction Key Touch Button)
The AC210 earphones feature intuitive touch controls for easy management of music and calls:
| Function | Action | Earphone |
|---|---|---|
| Pause/Play Music | Double click | Left or Right |
| Volume Up | Click | Right |
| Volume Down | Click | Left |
| Previous Song | Tap 3 times | Left |
| Next Song | Tap 3 times | Right |
| Activate Voice Assistant | Long press 2 seconds | Left or Right |
| Reject Call | Long press 2 seconds | Left or Right |
| Answer/End Call | Tap 2 times | Left or Right |
Detailed diagram of earphone touch controls.
4.2 Audio Features
- 360° Panoramic Sound: Experience an immersive spatial stereo sound field, reducing sound resonance for a concert-like listening experience.
- High-Resolution Sound Quality: Equipped with an acoustic tuning system and a composite titanium metal diaphragm, along with OFC high-purity multi-track voice coils, for rich music details and abundant bass.
- Directional Transmission Technology: Sound is transmitted directly into the ear without leakage, ensuring privacy and allowing real-time perception of external sounds for safety.
- AI Intelligent Call Noise Reduction (ENC): Enhances call clarity by effectively suppressing environmental noise during conversations.
Illustration of the 360° panoramic sound effect and ear-mounted design.
Overview of core technologies including open design, comfort, Bluetooth 5.4, and noise reduction.
5. Maintenance
5.1 Cleaning
- Wipe the earphones and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical sprays.
- Ensure charging contacts are clean and free of debris.
5.2 Water Resistance
The Monster AC210 earphones are rated IPX5 waterproof, meaning they are protected against low-pressure water jets from any direction. They are resistant to sweat and light rain, making them suitable for outdoor sports. However, they are not designed for submersion in water or use during swimming.
Monster AC210 earphone highlighting its IPX5 waterproof rating.
5.3 Storage
When not in use, store the earphones in their charging case to protect them from dust and damage, and to keep them charged.
6. Troubleshooting
If you encounter any issues with your Monster AC210 earphones, please refer to the following common solutions:
- No Sound: Ensure earphones are charged, properly paired, and volume is adjusted on both the earphones and your device.
- Pairing Issues: Turn off Bluetooth on your device, place earphones back in the case, then try pairing again. Ensure no other devices are trying to connect.
- Earphones Not Charging: Check the USB-C cable and power adapter. Ensure the charging contacts on both the earphones and case are clean and dry.
- Unstable Connection: Ensure your device is within the 10m wireless range and there are no significant obstructions between the earphones and your device.
- Voice Assistant Not Responding: Confirm your device's voice assistant is enabled and that you are performing the correct long-press action on the earphone.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | MONSTER |
| Model | AC210 |
| Style | OWS ear hook headphones, Semi-open |
| Communication | Wireless (Bluetooth) |
| Bluetooth Version | 5.4 |
| Connectors | Type-C (for charging) |
| With Microphone | Yes |
| Features | With microphone, Call Noise Reduction |
| Vocalism Principle | Dynamic |
| Number Of Drivers | 2 |
| Frequency Response Range | 20 - 20000Hz |
| Impedance Range | up to 32 Ω |
| Codecs | AAC |
| Volume Control | Yes |
| Control Button | Yes |
| Maximum Wireless Range | <10m |
| Waterproof Rating | IPX5 |
| Charging Method | Charging case |
| Battery Life (Earphones) | Approx. 5 hours (at 50% volume) |
| Total Playback Time (with case) | Approx. 20 hours |
| Material | Plastic, Silica Gel |
| Single Ear Weight | 5.5g |
| Package Dimensions (L x W x H) | 15cm x 13cm x 6cm |
| Package Weight | 160g |
| Certification | CE, FCC |
8. User Tips
- Optimal Fit: Experiment with the ear hook position to find the most comfortable and secure fit for your ear shape. A good fit enhances sound quality and stability.
- Situational Awareness: The open-ear design is excellent for outdoor activities. Always be mindful of your surroundings, especially in traffic or busy environments.
- Volume Management: While the earphones offer clear sound, prolonged listening at high volumes can damage hearing. Use a moderate volume level.
- Regular Cleaning: Keep the earphones and charging case clean to ensure optimal performance and hygiene.
9. Frequently Asked Questions (FAQ)
- Q: Are these earphones suitable for intense workouts?
- A: Yes, with an IPX5 waterproof rating, they are resistant to sweat and light rain, making them suitable for sports and outdoor activities.
- Q: How do I know if the earphones are fully charged?
- A: The charging case typically has indicator lights that show the charging status. Refer to the visual cues on your specific unit.
- Q: Can I use only one earphone at a time?
- A: Yes, the earphones can often be used independently. Simply take one out of the case and connect it to your device.
- Q: What is the benefit of the 'Open Ear' design?
- A: The open-ear design allows you to hear ambient sounds while listening to audio, enhancing safety during outdoor activities and making them more comfortable for long-term wear as they don't block your ear canal.
10. Warranty and Support
Your Monster AC210 earphones come with a standard manufacturer's warranty. Please refer to the included Warranty Card for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact the retailer or Monster customer service.
