Enjoy powerful bass and clear vocals anywhere with the Sony ULT FIELD 5. ULT POWER SOUND and the ULT Button with two bass modes deliver deep, high-volume playback. The rugged, water- and dust-proof design, dynamic party lighting and adjustable shoulder strap make it portable and party-ready. Up to 25 hours battery life with USB-C fast charge (10 min = 100 min playback) and DC output to charge devices. Wirelessly link up to 100 compatible speakers with Party Connect or pair two ULT FIELD 5 units for true stereo; 3.5mm line-in supports non-Bluetooth sources. Sound Field Optimisation adapts audio for indoor and outdoor listening, and the Sony Sound Connect app offers a 10-band EQ and custom settings. Includes one ULT Field 5 wireless speaker in White.