SonicGear AudioX Pro 500HD is a portable Bluetooth speaker with a total system power of 20W and a pure system power (RMS) of 10W. It features a 4" driver, a frequency response of 150Hz to 18kHz, and an impedance of 3 ohms. The speaker also boasts a Bluetooth range of 10 meters and supports the A2DP Bluetooth profile. Additionally, it has a built-in 2400mAh Li-ion battery, offering a playback time of 4 hours at 50% volume.