Open Ear Comfort: Monster open-ear wireless earbuds feature a completely open-ear design that earbuds rest gently and securely on top of your ear, achieving the real nothing in your ear Clear Calls & Robust Bass: Monster open ear headphones feature 16mm Large Drivers that embolden bass for an audio experience, ENC noise canceling technology can filter the environmental noise and pick up your voice at the same time Stay Aware & Protect Your Hearing: Monster open ear wireless earphones let you enjoy music and stay connected while being mindful of your surroundings and avoiding the health issues of traditional earbuds Bluetooth 5.4 & 32H Battery Life: Bluetooth 5.4 ensures a faster, more stable connection, and the large battery capacity of the earbuds eliminates battery anxiety. IPX5 Water Resistance & Born for Sports: The Monster wireless earbuds feature an exceptional waterproof design. no worry about falling off even with intense exercise, widely suitable for sports, exercise, running, cycling, hiking, driving, working, etc Monster Open Ear AC312 Headphones, Bluetooth 5.4, Wireless Earbuds with ENC Noise-Cancelling Mic, Immersive Stereo Sound by 16mm Large Drivers, Clear Calls, 32H Playtime, Sport Earbuds