Introduction
Welcome to the Monster AirStar A02 OWS Ear Clip Headphones user manual. These headphones are designed to provide an immersive audio experience with advanced features like Bluetooth 6.0, 360° panoramic spatial audio, crystal clear calls, and IPX4 waterproofing. This manual will guide you through the setup, operation, maintenance, and troubleshooting of your new headphones.

Monster AirStar A02 OWS Ear Clip Headphones and charging case.
Package Contents
- Monster AirStar A02 Ear Clip Headphones
- Charging Case
- Charging Cable (Type-C)
- User Manual (PDF available online)
Setup
1. Charging the Headphones
Before first use, ensure your headphones and charging case are fully charged.
- Place the earbuds into the charging case.
- Connect the charging case to a power source using the provided Type-C charging cable.
- A full charge for the charging case takes approximately 1.5 hours.
- The charging case has a battery capacity of 300mAh, and each earbud has a 28mAh battery.
2. Power On
The earbuds automatically power on when taken out of the charging case.
3. Bluetooth Pairing
The Monster AirStar A02 uses Bluetooth 6.0 for a stable and low-latency connection.
- Ensure the earbuds are powered on (taken out of the case).
- On your device (smartphone, tablet, etc.), go to Bluetooth settings.
- Search for available devices and select "Monster AirStar A02" to connect.
- Once connected, you will hear an audio prompt, and the earbuds will be ready for use.

Internal view of an earbud highlighting the Bluetooth 6.0 chip for instant, low-latency connection.
Operating Instructions
The AirStar A02 features smart touch controls for convenient operation.

Detailed diagram of touch control functions.
Normal Mode Controls
- Volume Up: Single tap the Left (L) earbud.
- Volume Down: Single tap the Right (R) earbud.
- Voice Assistant: Touch and hold either L or R earbud for 2 seconds.
Music Playback Controls
- Play/Pause: Double tap either L or R earbud.
- Previous Track: Triple tap the Left (L) earbud.
- Next Track: Triple tap the Right (R) earbud.
Hands-Free Call Controls
- Answer/End Call: Double tap either L or R earbud.
- Reject Call: Touch and hold either L or R earbud for 2 seconds.
Game/Music Mode Switch
- Enter Game Mode: Touch and hold the Right (R) earbud for 2 seconds.
- Switch to Music Mode: Touch and hold the Right (R) earbud for 2 seconds again.

Experience reduced latency and precise sound localization in Gaming Mode.
Maintenance
Cleaning
- Gently wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, solvents, or aerosol sprays.
- Avoid getting moisture in any openings.
Water Resistance
The AirStar A02 headphones are IPX4 waterproof, meaning they are resistant to splashes and sweat. They are suitable for sports and light rain. However, they are not designed for submersion in water. Avoid exposing them to strong jets of water or swimming.

IPX4 waterproof rating for sweat and splash resistance.
Storage
When not in use, store the headphones in their charging case to protect them and keep them charged.
Troubleshooting
Connectivity Issues
- Earbuds not connecting to device:
- Ensure Bluetooth is enabled on your device.
- Make sure the earbuds are charged and out of the charging case.
- Try "Clear Pairing" (see below) and re-pair the earbuds.
- Ensure the earbuds are within the Bluetooth range (approx. 10 meters).
- Only one earbud working:
- Place both earbuds back into the charging case and close the lid for a few seconds.
- Take them out again to see if they reconnect as a pair.
- Perform a "Clear Pairing" operation.
Clear Pairing
If you experience persistent pairing issues, you can clear all previous pairing data:
- When powered on but not connected: Tap either L or R earbud 5 times. The earbuds will power off, and all pairing and connection data will be cleared.
- When powered on and connected (hidden operation): Tap either L or R earbud 5 times, then long press for 10 seconds within 3 seconds. This clears pairing between devices and then powers off the earbuds.
Sound Quality Issues
- Ensure earbuds are clean and free from debris.
- Check the audio source and volume levels on both your device and the earbuds.
- Move closer to your connected device to avoid interference.
Specifications
| Feature | Specification |
|---|---|
| Product Model | A02 |
| Brand Name | MONSTER |
| Communication | True wireless |
| Wireless Type | Bluetooth |
| Bluetooth Version | 6.0 |
| Maximum Wireless Range | Approx. 10 meters |
| Waterproof Rating | IPX4 |
| Active Noise-Cancellation | Yes |
| With Microphone | Yes |
| Control Button | Yes |
| Volume Control | Yes |
| Sound Isolating | Yes |
| Vocalism Principle | Dynamic |
| Driver Diameter | 13mm |
| Frequency Response Range | 20 - 20000Hz |
| Sensitivity | 116.5±3dB |
| Impedance Range | up to 32 Ω |
| Resistance | 32 Ω |
| Max Output | 3mW |
| Codecs | AAC, sbc |
| Material | ABS, Plastic |
| Charging Method | Charging case (Type-C connector) |
| Charging Case Battery Capacity | 300mAh |
| Earbud Battery Capacity | 28mAh |
| Battery Life (Playback) | Approx. 4-5 hours |
| Battery Life (Calling) | Approx. 3 hours |
| Charging Time | Approx. 1.5 hours |
| Features | Waterproof, With microphone, Apple Siri Support, Google Assistant Support |
| Style | OWS ear clip headphones |

Product dimensions and key technical parameters.
User Tips
- Comfortable Fit: The innovative open-ear design and ergonomic structure are meant for prolonged comfortable wear. Adjust the ear clips gently to find the most secure and comfortable fit for your ear shape.
- Clear Calls: Utilize the AI environmental noise reduction for clearer calls, especially in noisy environments. Ensure the microphone is not obstructed.
- Gaming Experience: Switch to Gaming Mode for reduced latency and enhanced sound localization, which can improve your in-game reactions.
- Outdoor Use: The IPX4 waterproof rating makes these headphones suitable for workouts and light rain. Remember to wipe them dry after exposure to moisture.
Warranty and Support
For detailed warranty information and customer support, please refer to the official Monster website or contact your retailer. A multi-language user manual in PDF format is available for download from the product page or by contacting support.
You can view the digital user manual (PDF) for additional guidance. The PDF includes instructions in Chinese, English, French, German, and Japanese.