Experience powerful, portable sound with the Sony ULT FIELD 1. ULT POWER SOUND delivers boosted bass and high-volume playback. Built for outdoors with IP67 water- and dust-resistance, rust and shock resistance, and MIL-STD-810H drop testing (1.22 m) when the charging cover is closed. Features an adjustable two-way strap, easy playback controls and hands-free calling. Up to 12 hours battery life with fast USB-C charging (actual runtime varies by volume and usage). Pair two FIELD 1 speakers for wide stereo sound and control music via the Sony Music Center app. Includes speaker, USB-A to USB-C charging cable, and attached strap.