In evaluations by The Hammacher Schlemmer Institute, this wireless outdoor speaker had the best audio quality and unique superior features. Unlike lesser models that were plagued by static, The Best Speaker’s stereo and mono amplifiers, 7" subwoofer, and four 3" full range drivers produced crisp, clear audio and panelists ranked it as providing the best sound in all categories tested. It also contained features that inferior models did not, such as NFC Bluetooth pairing, a water-resistant IPX64 rating, and a 15-hour battery life. The Best speaker maintained a connection of over 295' from an iPhone and it provides easy operation with track selection, volume control, and play/pause buttons on its top. With 3.5mm input and aux cable. Charges via AC. Black. 19" H x 11" W x 11" D. (22 lbs.)