The second of two S1 Audio NxSET Music headphones, the S1 Audio NxSET Music 2 is a slight upgrade from the S1 Audio NxSET Music 1 in that it adds along two retractable earbuds so that users can choose to either listen to the music ‘publicly’ with the full-range stereo speakers or ‘privately’ via the earbuds. In all other ways, however, the NxSET Music 2 is practically a duplicate of its peer. For instance, the NxSET Music 2 also features two 25mm high-fidelity speakers whose volume can be turned up high enough to allow the unit to serve as a highly portable speaker system. In addition, the NxSET Music 2 boasts an internal audio amplifier that delivers rich bass and clear/crisp middle & high range sound, dual flex points that enables users to customize their fit without sacrificing the unit’s unique style, an on-board volume control, mute and multiple music play/forward functions, and a send/end call button. It should also be noted that the NxSET Music 2 is powered by two AA batteries. Furthermore, the NxSET Music 2 comes equipped with a 36” cable and a 3.5mm iPhone-compatible plug. The S1 Audio NxSET Music 2 retails for a slightly more expensive $99.95 (versus $79.95) and comes with a 90 day limited warranty.