Seamless rubber construction built to keep up with an active on-the-go lifestyle. Precision-tuned acoustics for full-range clarity and low distortion at any level. Rechargeable battery with extra capacity for up to 15 hours of continuous play. Convenient volume and playback buttons for remote control of your music. Integrated microphone for hands-free wireless voice calls on most smartphones. Auxiliary stereo input to connect wired-only devices with included audio cable.