"Experience exceptional underwater audio with these bone conduction swimming headphones, featuring 32GB of built-in memory to store up to 10,000 songs, IPX8 waterproofing, and the latest Bluetooth 5.4 technology. Enjoy up to 10 hours of continuous playback with a 200mAh battery. The open-ear bone conduction design ensures all-day comfort while keeping the ear canals clean, allowing for clear music and awareness of surroundings during workouts. Ideal for water sports enthusiasts seeking high-quality sound and outstanding performance. 【Comfortable Bone Conduction Technology】 - The open-ear headphones use bone conduction technology to ensure all-day comfort without earplugs, keeping your ear canals clean. This design not only ensures you can hear music clearly underwater but also allows you to stay aware of your surroundings during workouts, enhancing safety. Enjoy high-quality music while benefiting from the perfect combination of superior sound quality and excellent waterproof performance, making these headphones the top choice for water sports enthusiasts. 【Built-in 32GB MP3 storage】-These bone conduction headphones feature a built-in 32GB memory, capable of storing up to 10,000 songs. Whether you’re in for a long training session or enjoying some leisure time, the extensive music library lets you enjoy high-quality music anytime, anywhere, without relying on your phone or other devices.(Note: For underwater swimming, use the MP3 playback mode as Bluetooth cannot transmit underwater.) 【IPX8 Waterproof Design】- With an IPX8 waterproof rating, these headphones are fully waterproof and can be used underwater. This makes them ideal for swimming, diving, and other water sports. Whether in the pool or the ocean, you can be assured that your music will never be interrupted. 【Stable Bluetooth 5.4 Technology】- Equipped with the latest Bluetooth 5.4 technology, the connection is more stable, the transmission speed is faster, and the sound quality is superior. Even in noisy environments, you can maintain a clear audio connection, enjoying seamless music playback and phone call experiences.(Note: Bluetooth mode cannot be used underwater, there is no signal) 【Long-lasting Battery Life】- With a built-in 200mAh high-capacity battery, these headphones provide up to 10 hours of continuous playback time, eliminating the need for frequent recharging. With a standby time of over 300 hours, they remain ready to serve you even after long periods of inactivity. Frequency Range: 20 Hz - 20,000 Hz Date First Available: August 6, 2024 Compatible Devices: [Inferred: Devices with Bluetooth 5.4 support] Unit Count: 1.0 Count Recommended Uses For Product: Cycling, Running, Swimming Age Range Description: Adult Wireless Communication Technology: Bluetooth ASIN: B0DCC5T4RF UPC: 761373256202 Headphone Folding Features: Bone Conduction Form Factor: Bone Conduction Antenna Location: Cycling, Running, Swimming Manufacturer: Nilsinn Style: swimming Enclosure Material: [Inferred: Silicone, Plastic, Rubber] Audio Driver Type: Bone Conduction Driver Model Name: X7 Earpiece Shape: open ear Package Dimensions: 5.39 x 4.41 x 1.93 inches; 4.97 ounces Series Number: 7 Control Method: Remote Color: Black Item model number: X7 Material: [Inferred: Silicone, Plastic, Rubber] Model Number: X7 Ear Placement: Open Ear Units: 1.0 Count Brand: Nilsinn Cable Feature: Without Cable Bluetooth Version: 5.4 Wireless Technology: Bluetooth Style Name: swimming Water Resistance Level: Waterproof Age Range (Description): Adult Cable Features: Without Cable Headphones Ear Placement: Open Ear Connectivity Technology: Wireless"