Monster Open Free AC100 Open Ear Headphones, Bluetooth 5.3 Wireless Headphones, Immersive Stereo Sound by Dual Large Driver, Clear Talk, 30H Playtime, Waterproof Earbuds for Running, Black

Price: $49.99 - $79.99
(as of Nov 08, 2025 10:45:32 UTC – Details)

Product description

16mm Large Dynamic Driver

Featuring a 16mm large dynamic driver unit, Open Free AC100 Headphones deliver pure and high-quality sound with a wider audio performance and powerful bass, enhancing your music experience.

Enjoy your music without compromising your ability to hear important traffic sounds or sirens.

The Al Call Noise Cancellation technology filters out up to 99% of ambient noise.

The open-ear design makes air circulate freely, reducing moisture buildup and discomfort.

Stay connected and enjoy seamless communication without the need to remove your earphones.

1 Safe Drive

2 Crystal Clear Calls

3 Max Comfort for Workouts

4 Seamless Communication

1 Directional Acoustics

2 Listen For Longer

3 Extreme Comfort

Bluetooth 5.3 Technology

Equipped with Bluetooth 5.3 technology, Open Buds provide stable wireless connectivity and reliable audio transmission.

Immersive Stereo Sound Effects

Experience the immersive power of stereo sound with Open Headphones. The carefully crafted audio technology delivers rich, dynamic soundscapes, bringing your music to life.

IPX5 Water-Resistant

Water-resistant nano-coating effectively protects wireless earbuds from sweat and rain splash. Perfect for the gym and outdoor trips.

One-Step Pairing

True wireless experience with a fast and stable connection. After the first time pairing is successful, turn on Bluetooth on your smartphone to pair in one step.

1 Easy Tap Control

2 Easy to Wear

3 What’s in The Box

4 Tips

【Comfort Open-Ear】The Open-ear design of Air conduction earphones helps to achieve true painlessly and harmlessly. There is no need to put the earbuds in the ear canal, so ears will not feel sore and painful even when listening to music for the whole day.
【Immersive Stereo Sound Effects】Monster Open Free AC100 Open Ear headphones dive into a world of sonic richness with the expansive soundstage delivered by 16mm large drivers. From deep bass to crisp highs, every nuance of music is brought to life with breathtaking clarity.
【 AI Noise-canceling】Monster Open Free AC100 Open Ear headphones have built-in AI noise-canceling technology and dual microphones, which adopt environmental noise reduction technology to monitor the sounds around you and instantly produce an opposite signal to reduce background noise. Whether you’re in a bustling café or a busy office, background noise fades away, leaving only crystal-clear conversations.
【Ultra Long Playtime】 These air-conduction headphones boast an impressive total battery life of 30 hours (at 50% volume) when combined with the charging case, allowing for uninterrupted listening sessions throughout the day. With each use lasting up to 6 hours, these headphones provide the perfect blend of longevity and reliability—no more battery anxiety.
【Advanced Bluetooth 5.3】With advanced Bluetooth headphones 5.3 technology, you can get 2X fast transfer speed (75% higher than the previous generation) and a more stable connection. Wireless headphones will be paired with each other automatically, and just hit on Bluetooth list “Monster Open Free AC100” on your device to connect, avoiding complex operations and saving waiting time. Whether you’re pairing with your smartphone, tablet, or laptop, enjoy stable and efficient wireless connections for uninterrupted music enjoyment.
【Enhanced Awareness】Seamlessly transition between different environments with Monster Open Free AC100 Open-Ear design. Stay connected to your surroundings while enjoying your favorite tunes with these open-ear headphones. Whether commuting through busy streets or taking a stroll in the park, ambient sounds blend seamlessly with your music for an immersive listening experience.
【Dedicated After-Sales Support】At Monster, we prioritize your satisfaction. Our professional customer service team stands ready to assist with any inquiries or feedback you may have about our products. Don’t hesitate to reach out–we’re committed to ensuring a seamless shopping experience and finding solutions that meet your needs.