Bluetooth Speaker The Soloist that attracts the crowds. With this device, you won't be solo for long: The Bluetooth speaker GBT Solo magically draws in fellow partygoers, as it offers a rechargeable lithium-polymer battery with a runtime of up to 20 hours—after that, even the most enduring dancer will likely be satisfied to head home. Music streaming is possible up to a distance of 30 meters—thanks to a total output power of 3.5 W RMS, the sound also has an impressive range. You can safely place the speaker on the edge of a fountain on a hot day to enjoy refreshing coolness while listening to music, as the device features a splash-proof housing available in red, blue, and black. Key Features Audio RMS Power 3.5 W Connections and Interfaces Transmission Technology Wired & Wireless Wi-Fi No Bluetooth Yes 3.5mm Connection No AUX Input Yes Bluetooth Version 5.0 Bluetooth Range.