[Groundbreaking innovation: "The wind noise drowns out my headphones when I\m biking." "It\s tough to hear my headphones clearly in a noisy pool!" Nank innovative noise-canceling mode will fix these problems Open-Ear & Noise-Canceling Mode: Featuring a pioneering 35° adjustable ear hook design you can freely switch between open-ear and noise-canceling modes by adjusting the angle of the ear hooks. Enjoy clear music whether in a quiet or noisy environment "IP69 Swimming Headphones: Certified with top-level IP69 waterproofing these swimming headphones combine nano waterproof coating technology with ultrasonic welding for a waterproof rating that exceeds industry standards. They support swimming and diving in various environments（Note: Please use MP3 mode while swimming as there are Bluetooth signals that cant be transmitted in the water!）" Bluetooth 5.4 with MP3 Player: Runner Diver2 Pro can be used as Bluetooth headphones or as an MP3 player with built-in memory. Bluetooth 5.4 pairs easily with iOS and Android devices. Triple tap to switch to MP3 mode and store enough songs with 32GB of memory Comfortable Wear: The sports headphones are designed with ergonomic memory elasticity every angle is meticulously crafted for comfort. The streamlined design ensures a secure fit during any activity. The adjustable ear hook design makes the headphones compatible with swim caps goggles or helmets 10-Hour Battery Life: Runner Diver2 Pro bone conduction headphones with the Fast Charge technology charge for 10 minutes and get 120 minutes of playtime. The headphones offer a 10-hour super-long battery life keeping the music going through your long workouts]