Clips Neckband NB-S2 Bluetooth 4.0 Stereo Headset with Built-in Speaker (White) Stereo music streaming (AptX Compatible) with Noise reduction & Echo cancellation. Alerts user (by vibration) if phone is out of range. Built in speakers and able to switch between headphone and external speakers Stand by time: Up to 700 hours, Talking: Up to 20 hours, Music Playback: Headphone Up to 18 hours, Speaker: Up to 5 hours delivers enhanced audio and bass response and a host of calling features in a sleek, comfortable design Unique around-the-neck design that's lightweight and comfortable for all-day use