Enjoy powerful bass and clear vocals with the Sony ULT Field 3. ULT Power Sound delivers deep bass and high-volume playback, and the ULT Button gives an instant bass boost. Compact, easy-to-hold design with adjustable shoulder strap; water- and dust-proof for outdoor use. Up to 24 hours of battery life with USB-C quick charge (10 min = 2 h playback). Bluetooth wireless connectivity and hands-free calling. Party Connect links up to 100 compatible speakers, and two ULT Field 3 units can be combined for true stereo. Sound Field Optimisation keeps audio balanced indoors and out, while the Sony Sound Connect app provides a 7-band EQ and custom settings. Includes 1x ULT Field 3 Wireless Speaker (Black) and a 12-month manufacturer warranty.