The Philips BT100B Bluetooth Portable Speaker with Built in Mic delivers incredible sound without you having to connect it to power outlets or connector cables. The portable speaker’s 2W RMS output and Anti Clipping Function enhancement helps it produce high fidelity sound without distortion. A built in microphone enables crystal clear handsfree calls. The Bluetooth speaker’s integrated Lithium Polymer battery provides up to 8 hours continuous music playback on a single charge.