MP3 and Bluetooth Dual Mode: With a built-in 32GB memory, these headphones can store up to 7,000 songs and support multiple audio formats, including MP3, WMA, WAV and FLAC. Even without a phone, you can effortlessly enjoy music during workouts. The included magnetic charging cable makes it easy to transfer audio files from your computer to the headphones (Note: Please use MP3 mode when swimming, Bluetooth mode is not work) IP68 Waterproof: The RR SPORTS underwater headphones are fully waterproof and moisture-resistant, capable of withstanding submersion in up to 2 meters of water. Designed for swimming enthusiasts, these earphones can be comfortably worn with both swim caps and goggles. Their meticulously sealed design, combined with a nano-hydrophobic coating, effectively prevents sweat, rain, and water from penetrating, ensuring the internal components remain protected and undamaged Open-Ear Comfort: Crafted from ultra-soft silicone, these bone conduction Bluetooth headphon