Introduction
Thank you for choosing the Monster Open Free AC100 Open Ear Headphones. These headphones are designed to provide a comfortable and immersive audio experience while keeping you aware of your surroundings. Featuring Bluetooth 5.3 for stable connectivity, 16mm large drivers for rich sound, AI noise-canceling for clear calls, and a waterproof design, they are ideal for daily use and sports activities.
What's in the Box
Upon opening your Monster Open Free AC100 package, you will find the following items:
- Two (2) Open Ear Headphones (Left & Right)
- One (1) Charging Case
- One (1) Type-C Charging Cable
- One (1) Quick Guide / User Manual
An image displaying the contents of the Monster Open Free AC100 package, including the open ear headphones (left and right), charging case, Type-C charging cable, and quick guide.
Product Overview
The Monster Open Free AC100 headphones feature an innovative open-ear design that rests comfortably without entering the ear canal, ensuring a pain-free listening experience even during extended use. Each earbud is equipped with a soft ear hook for a secure and stable fit, making them suitable for various activities.
A pair of black Monster Open Free AC100 open-ear headphones resting beside their matching black charging case.
A man wearing the Monster Open Free AC100 headphones, illustrating the comfortable open-ear design with ergonomic ear hook, secure fit, and ultra-light features.
An illustrative diagram highlighting the superb sound quality of the Monster Open Free AC100 headphones, featuring 16mm super large drivers, a powerful chip, strong bass, and immersive stereo sound.
A woman wearing Monster Open Free AC100 headphones while working on a laptop, demonstrating crystal clear calls enabled by dual microphones with AI noise cancellation technology.
The Monster Open Free AC100 headphones and charging case, emphasizing their impressive 30-hour total playtime, with 6 hours on a single charge.
A woman wearing the Monster Open Free AC100 headphones, illustrating the secure fit and extreme comfort of the open-ear design compared to traditional in-ear earbuds that can cause discomfort.
A man cycling outdoors while wearing Monster Open Free AC100 headphones, highlighting the safety and awareness feature that allows users to enjoy music while remaining aware of their surroundings.
Setup
1. Charging the Headphones and Case
Before first use, ensure both the headphones and the charging case are fully charged. Connect the provided Type-C charging cable to the charging port on the case and a power source. The indicator light on the case will show charging status.
2. Bluetooth Pairing
The Monster Open Free AC100 headphones are designed for one-step auto pairing. Follow these steps to connect to your device:
- Ensure the charging case has power and the earbuds are inside.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), go to Bluetooth settings.
- Search for "Monster Open Free AC100" in the list of available devices.
- Select it to connect. Once connected, you will hear an audible confirmation.
The Monster Open Free AC100 headphones and charging case next to a smartphone and laptop, showing the one-step auto pairing process for stable and faster Bluetooth 5.3 connection across Android, Apple, and Windows devices.
3. Wearing the Headphones
For optimal comfort and sound, ensure the headphones are worn correctly:
- Confirm the correct earbud (Left/Right) as shown in the figure.
- From top to bottom, place the ear hook behind your ear.
- Adjust the earbud for comfort and security.
- Ensure the earbud sits comfortably without pressing into the ear canal.
A four-step diagram illustrating how to easily wear the Monster Open Free AC100 headphones: 1) Confirm earbud orientation, 2) Place ear hook behind ear, 3) Adjust for comfort and security, 4) Complete.
Operating Instructions
Touch Controls
The Monster Open Free AC100 headphones feature intuitive touch controls on each earbud. The following table outlines the functions:
| Action | Control (R/L) | Function |
|---|---|---|
| Single Tap | R/L x 1 | Play/Pause Music, Answer/Hang Up Call |
| Double Tap | L x 2 | Volume Down |
| Double Tap | R x 2 | Volume Up |
| Triple Tap | L x 3 | Previous Song |
| Triple Tap | R x 3 | Next Song |
| Hold 2s | R/L x 2s | Reject Call, Activate Voice Assistant |
A diagram detailing the easy tap controls for the Monster Open Free AC100 headphones, including single tap for play/pause and answer/hang up, double tap for volume up/down, triple tap for previous/next song, and hold for 2 seconds to reject calls or activate voice assistant.
Power Management
The headphones automatically power on when removed from the charging case and power off when placed back into the case and the lid is closed. This ensures efficient battery usage and seamless connectivity.
Maintenance
Cleaning
To ensure optimal performance and charging, regularly clean the charging interface of the headphones and the charging pins within the case. Use a soft, dry cloth to gently wipe away any dust or oil stains. Avoid using abrasive materials or liquids.
Water Resistance (IPX5)
The Monster Open Free AC100 headphones are IPX5 waterproof, meaning they are protected against low-pressure water jets from any direction. They are suitable for workouts and light rain. However, they are not designed for submersion in water. Always ensure the headphones are dry before placing them back into the charging case to prevent damage.
Storage
When not in use, store the headphones in their charging case to protect them from dust, scratches, and accidental damage. Store the case in a cool, dry place away from extreme temperatures.
Troubleshooting
If you encounter any issues with your Monster Open Free AC100 headphones, please refer to the following common troubleshooting steps:
- Volume Control Issues: If the volume control is not functioning normally, it may be due to dust or oil stains blocking the charging interface of the headset and charging bin. Clean the charging interface of the headset and charging bin regularly to ensure proper contact and normal charging.
- Single Earphone Pairing Issues: If a single earphone cannot be paired normally, try resetting the earphone. Insert both the left and right earphones into the charging slot of the earphone case. Double-click both the left and right earphones twice. The white LED will flash 3 times, indicating a successful reset. Then, remove them from the charging bin and reconnect to your phone.
Text providing information on product troubleshooting steps, including solutions for volume control issues due to blocked charging interfaces and steps to reset and re-pair a single earphone.
Official Product Video
An official product video showcasing the features and design of the Monster Open Free AC100 Open Ear Headphones, including their open-ear comfort, sound quality, and Bluetooth connectivity.
Specifications
| Feature | Detail |
|---|---|
| Model Name | OPEN FREE |
| Item Model Number | MH22156 |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Ear Placement | Open Ear |
| Earpiece Shape | Earhook |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 16 Millimeters |
| Battery Life | 30 Hours (with charging case) |
| Noise Control | Active Noise Cancellation (AI Noise-canceling) |
| Water Resistance Level | Waterproof (IPX5) |
| Control Type | Media Control (Remote) |
| Item Weight | 6.7 ounces |
| UPC | 810079701032 |
Warranty and Support
Monster is committed to customer satisfaction. For any inquiries or feedback regarding your Monster Open Free AC100 headphones, our professional customer service team is ready to assist you. Please do not hesitate to reach out for support.
