Comfortable Open-Ear Design
The open-ear air-conduction design allows you to enjoy music without inserting earbuds into your ear canal. Comfortable for all-day wear, these headphones reduce ear fatigue and eliminate pressure or soreness.

Immersive Stereo Sound
Equipped with 16mm large drivers, the AC100 delivers rich, balanced audio—from deep bass to crisp highs—creating a wide, immersive soundstage for music, calls, and podcasts.

AI Noise Reduction for Clear Calls
Built-in AI noise-canceling technology with dual microphones reduces background noise for clearer conversations. Ideal for busy offices, cafés, or outdoor environments.

Up to 30 Hours of Playtime
Enjoy up to 30 hours total battery life, with up to 6 hours per charge. Designed for long listening sessions without constant recharging.

Bluetooth 5.3 for Fast, Stable Connection
Advanced Bluetooth 5.3 technology provides faster data transfer and a more stable connection. Automatically pairs with your device—just select “Monster Open Free AC100” from your Bluetooth list for quick setup.

Stay Aware of Your Surroundings
The open-ear design keeps you connected to ambient sounds while listening to music. Perfect for commuting, walking, or outdoor activities where situational awareness matters.