The Bose SoundLink Bluetooth 404600 Wireless Mobile Speaker Portable Series II is a black speaker compatible with various Bose models. It features wireless and Bluetooth connectivity, a rechargeable battery, remote control, and Hi-Fi audio. With dimensions of 9.6" x 5.1" x 1.9" and weighing 2.8lbs, this speaker delivers 5 Watts RMS power and includes a 3.5mm audio input and integrated charger.