【Comfort Open-Ear】The Open-ear design of Air conduction earphones helps to achieve true painlessly and harmlessly. No need to put the earbuds in the ear canal, so ears will not feel sore and painful even 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.

【30H Ultra Long Playtime】These air conduction headphones boast an impressive total battery life of 30 hours, allowing for uninterrupted listening sessions throughout the day. With each individual 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 you're commuting through busy streets or taking a leisurely stroll in the park, ambient sounds blend seamlessly with your music for an immersive listening experience.