Sony ULT FIELD 1 - Wireless Bluetooth Portable Speaker with ULT POWER SOUND, Powerful Bass, IP67, Waterproof, Dustproof, Shockproof, 12hr Battery, Clear Call Quality, Outdoor, TravelIntroducing the ULT FIELD 1 the smallest, most portable speaker in the ULT POWER SOUND range. It may be small, but the ULT FIELD 1 produces huge, impactful sound using a combination of a powerful woofer, a high quality tweeter, and two passive radiators to enhance the bass. But to experience the true power of the ULT FIELD 1, simply press the ULT button and you'll hear the ULT POWER SOUND difference. The bass is boosted, adding more depth and