Speaker uses D batteries, has an auxiliary port on back and a usb charging port too. The only known complaint for this Model is the ouside sticky rubber coating. I spent two hours using alcohol to remove the most of those rubber coating. May still have some residuals on it but won' affect the sound quality.
Here is the reference link from Klipsch. Please see pictures for actual condition.Please let me know if you have any questions. Coming from a smoke free and pet free home. The item "Klipsch KMC 3 WIRELESS Center KMC3 Bluetooth AptX Portable Speaker with Remote" is in sale since Sunday, April 4, 2021. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Home Speakers & Subwoofers". The seller is "lasoccerjj" and is located in Alhambra, California. This item can be shipped worldwide.