1. Completely: This open-back swimming headset is designed to work continuously up to 9 feet or 3 meters underwater, and the open-back swimming headset in MP3 mode is perfect for swimming and other underwater activities. During swimming or diving activities, you can enjoy music, podcasts, or audiobooks to make you more motivated. It also has a built-in microphone so you can answer calls at any time. 2. Reduce Risk: Vibration transmits sound to the inner ear through the zygomatic bone, bypassing the eardrum, reducing the risk of hearing loss caused by long-term use. Enhance your environmental and situational awareness during activities to ensure the advantages of bone conduction headphones. 3. Comfortable fit: This swimming headset uses a high-quality titanium alloy frame, but it is very light. The surface of the earphones that fit the zygomatic bone is coated with silicone, providing a soft touch, minimizing pressure, and giving you better comfort during sports, leisure, and wet environments. 4. Excellent sound quality: Although our bone conduction technology is transmitted through the zygomatic bone, the sound is clear, the volume is strong, and the bass is rich, which can provide high-quality audio and listening experience.