Customize your sound experience with the Jaybird X4 Wireless Sport Headphones. These headphones provide a fully adjustable EQ in the app, allowing you to modify the way you enjoy your music. Designed for adventure, the Jaybird X4 headphones are entirely weatherproof to keep up with your favorite outdoor activities. With an IPX7 rating, the headphones are both sweat and waterproof. The headphones also come with interchangeable fins and tips, allowing you to find the ideal fit. Likewise, you can wear them over or under the ear. In addition, the 8-hour battery enables you to listen to music all day long. Similarly, you can quickly charge them for just ten minutes for another hour of playtime or reach full charge in two hours.