The refined X3 earbuds from Jaybird combine a secure and comfortable fit with big and powerful audio. Sweat and weather proof, they're perfect for exercising with, whether you're jogging in the park or on a seriously demanding workout. Wireless Bluetooth technology liberates you to power through your activity without the clutter of a wired connection. With a battery life that ensures they keep going as long as you do, and innovative secure fit design for stability, these are brilliant-sounding sport earphones for athletes everywhere. Read more… X3 Audio The Jaybird X3s are designed to effortlessly inject impressive audio into your exercise routine. They deliver a powerful sound that motivates you to keep going, from driving bass frequencies to mids and trebles with punch, clarity and detail. X3 Wireless With wireless Bluetooth technology, you can connect to your music without plugging in, just pair up with your smart device. Charging via USB, the Jaybird X3s will keep going for up to 8 hours of playtime, so they'll power the longest workout. The in-line remote control allows you to take hands-free calls with ease so nothing has to stop you from your training. X3 Design Jaybird's innovative design allows the X3s to be worn in traditional under-ear fashion or over-ear to liberate the neck from the wire. Three sizes of memory foam ear-tip are included so you can find the perfect fit for comfort and stability, even over the longest listens. Sweat and weather resistant, they'll perform in any environment, and they'll fit under any helmet. X3 to Share The Jaybird X3s allow you to connect two pairs to a single smart device, so you can share the listening experience with a friend. Or, you can connect your own pair to two devices simultaneously, so you could connect to your laptop, and your phone, at the same time.