Introduction
Thank you for choosing the Monster AC601 OWS Wireless Bluetooth Earphones. This manual provides essential information on the specifications, setup, operation, maintenance, and troubleshooting of your new earphones. Please read it carefully to ensure proper use and optimal performance.

Monster AC601 OWS Wireless Bluetooth Earphones and charging case, highlighting noise reduction capabilities.
1. Specifications
| Feature | Detail |
| Bluetooth Version | Bluetooth 5.4 |
| Waterproof Rating | IPX5 (Sweat & Water Resistant) |
| Single Earphone Playtime | Up to 9 hours |
| Total Playtime (with charging case) | Up to 39 hours |
| Charging Port | Type-C |
| Case Battery Capacity | 500mAh (OCR says 380mAh, using JSON 500mAh as more reliable for general spec) |
| Earphone Full Charge Time | ~1.5 hours |
| Charging Case Full Charge Time | ~2 hours |
| Material | Plastic, Silica Gel |
| Dimensions (approx.) | Width: 85mm, Depth: 125mm, Height: 145mm |
| Weight (approx.) | 160g |
| Driver Diameter | 13mm |
| Impedance Range | Up to 32 Ω |
| Frequency Response Range | 20 - 20000Hz |
| Features | Smart touch control, Auto power on/off, Auto reconnection, ENC call noise reduction, Open-ear design, HD stereo sound, With microphone, Active Noise-Cancellation, Volume Control, Control Button |
| Certifications | CE, FCC |
| Package List | User Manual, Charger, Charging case |

Battery life overview: 39 hours total playtime with charging case, 9 hours single earphone playtime, 1 hour fast charging duration.

Bluetooth 5.4 technology for improved transmission rate.
2. Setup
2.1 Wearing the Earphones
The AC601 earphones feature an open-ear, non-in-ear design. To wear them:
- Hang the earhook behind your ear.
- Ensure the speaker unit rests gently in front of your ear.

Comfortable non-in-ear design with secure ear clip fit.
2.2 Power Control
- Power On: The earphones will automatically power on when taken out of the charging case (red & blue lights will flash rapidly). To manually power on, hold the touch area for 3 seconds.
- Power Off: The earphones will automatically power off and begin charging when placed back into the charging case. To manually power off, hold the touch area for 5 seconds.
2.3 Bluetooth Pairing
- After powering on, the headset will automatically enter pairing mode, indicated by rapidly flashing red and blue lights.
- On your phone, tablet, or PC, enable Bluetooth and search for "Monster AC601" in the list of available devices.
- Select "Monster AC601" to connect.
- The headset will automatically reconnect to the last paired device the next time it is powered on.
2.4 Resetting the Earphones
If you experience pairing issues, you can reset the headset:
- Ensure the headset is powered off.
- Hold the touch area for 8 seconds to perform a factory reset, which clears all pairing records.
3. Operation
3.1 Touch Control Functions
The AC601 earphones feature intuitive touch controls:
- Single Tap: Play/Pause music; Answer/End call.
- Double Tap: Next track; Reject call.
- Triple Tap: Previous track.
- Hold 3 seconds: Activate voice assistant (Siri, Xiaoai, etc.).
- Hold 5 seconds: Manual power off.
- Hold 8 seconds: Factory reset (clears all pairing records).
3.2 Call Functions
- Incoming Call: Single tap to answer, double tap to reject.
- During a Call: Single tap to hang up.

HD call with ENC Intelligent Noise Reduction for clear communication.
4. Charging Instructions
- The earphones will automatically charge when placed into the charging case.
- To charge the charging case, connect it to a power source using a Type-C cable.
- A red light flashing indicates a low battery alert for the charging case.
- Full charge time for earphones is approximately 1.5 hours.
- Full charge time for the charging case is approximately 2 hours.
5. Maintenance & Warnings
5.1 Cleaning
Wipe the device with a dry, soft cloth. Do not wash or use alcohol/chemical cleaners, as these can damage the earphones.
5.2 Waterproof Information
The earphones are IPX5 rated, meaning they resist sweat and light rain. DO NOT swim or submerge the earphones in water. The charging case is not waterproof.

IPX5 grade life waterproof for sweat and light rain resistance.
5.3 Storage
For long-term storage, fully charge the earphones and case. Store them in a dry place and recharge them once a month to maintain battery health.
5.4 General Precautions
Avoid exposing the earphones to high temperatures, extrusion, dropping, or hard pulling to prevent damage.
6. Troubleshooting
| Issue | Solution |
| Pairing Failure | Reset the headset (hold touch area for 8 seconds when off) to clear old Bluetooth records, then attempt to pair again. |
| Sound Lag or Disconnection | Move closer to the connected device, adjust the wearing position of the earphones, and check the battery level of the earphones and case. |
| Charging Failure | Clean the metal charging contacts on both the earphones and the charging case. Try replacing the charging cable or adapter. |
7. User Tips
- The open-ear design is noted for comfort, making them suitable for extended wear without ear fatigue.
- Users appreciate the sound quality, especially considering the comfortable fit.
- Ensure a stable Bluetooth connection by keeping your device within the maximum wireless range (<10m).
8. Warranty & Support
For detailed warranty information and further support, please refer to the official user manual PDF available at: Monster AC601 User Manual (PDF). You may also contact Monster customer service for assistance.