【Open-Ear Comfort】Featuring innovative bone conduction technology and open-ear design, ANINUALE Bluetooth bone conduction swimming headphones allow you to enjoy a bud-free, comfortable listening experience all day, in or out of the water. Compared with traditional earbuds or over-ear headphones, the waterproof sports headphones ensures you're aware of your surroundings while enjoying your favorite music or talking with improved connection and safety.

【IP68 Waterproof Rating】K9Pro MP3 swimming headphones has IP68 professional deep waterproof rating, completely waterproof and sweatproof, so you can enjoy your favorite audio in swimming, running, cycling, training sports, ectc,. The bluetooth wireless earphones can be submerged in water up to two meters deep for up to five hours. (Bone conduction can be used in water, in-ear headphones conduction can't.)

【Built-in 32GB Memory & Dual Mode】The Bluetooth bone conduction headphones has 32GB internal music storage for a library of up to 9000 songs ready to play at the touch of a button. Supports MP3, WAV, WMA, AAC, and FLAC for device-free listening. Using Bluetooth 5.3 chip, the connection is faster and more stable, 100% synchronized, zero delay. Dual modes of Bluetooth and Local MP3 Playback allow you to enjoy music anytime, anywhere without your mobile phone.

【12 Hours of Music & Secure Fit】With 12 hours of battery life and easy commands such as play, skip, pause, and back-a-track, you can enjoy your music lap by lap. Lightweight and stable, the bone conduction headphones is ergonomically designed for a comfortable and stable fit during intense training sessions. Widely used in podcasting, swimming, running, hiking, cycling, exercising, gym, sports and driving, etc. Please use MP3 mode and bone conduction connector underwater.

【Premium Sound Quality & Privacy Protection】Using the latest patented bone conduction technology, experience premium audio with clear sound, powerful volume and rich bass delivered through the cheekbones. Coupled with the blessing of innovative technology, K9Pro open-ear Bluetooth headphones can effectively avoid sound leakage and protect your privacy while enjoying high-quality sound. Built-in noise-canceling microphone for clearer calls.

【2-in-1-Design】To meet your needs in different scenarios, we have upgraded the traditional bone conduction earphones. There is also an additional in-ear connector, which let you enjoy music better in a noisy environment and isolate the outside world. Tips: Please use MP3 mode and Bbone Conduction Connector underwater because Bluetooth can't transmit underwater.