Bluetooth Speaker The Soloist that attracts the crowd. 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 - even the most enduring dancer will likely be satisfied and head home after that. 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 the 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 3.5 mm jack No AUX input Yes Bluetooth version 5.0 Bluetooth range.