Sony ULT Field 1 Green

With the Sony ULT Field 1 Green, you can enjoy powerful and detailed sound. The speaker has a tweeter, powerful woofer, and 2 passive radiators. These passive radiators move along with the vibrations of the woofer that produces the bass. This makes the bass even stronger and you can enjoy a clear beat. The ULT button on the speaker provides an even deeper bass and fuller sound, so you can completely immerse yourself in your music. The speaker has an IP67 certification, so it's dustproof and water-resistant, so you can take it with you to the beach or pool without issues. The speaker is shockproof, so it can take a hit. The 12-hour battery life lets you enjoy your favorite songs all day.