ULT Power Sound button enhances bass. Low-end frequencies support exceptional booming bass. Waterproof dustproof and shockproof. Up to 24 hours of battery life. 7-Band Equalizer. Exceptional call clarity. 2-Way active design with dedicated woofer and tweeter. Compact grab-and-go design. Shoulder strap for easy portability. Connect two ULT FIELD 3 speakers wirelessly with Stereo Pair. Effortless Bluetooth pairing with a tap on Android devices. Multipoint connection supports pairing with two Bluetooth devices simultaneously. USB Type-C charge and charge other devices.