Bluetooth is one speaker only. These are not ABEC 7 bearings. Once that was done, we removed the holding bolts, spray painted the welded spots, took it back to the trailer, used a jack to lift it up into place, used some c-clamps to keep it tight on each side of the frame, welded each side to our trailer frame and again spray painted the welded spots. 😊👌 I look forward to hours of pain-free gaming to come. Exactly as described, good light duty shelf. The sound is clear and concise. The cuteness is definitely in the clip on pink pom pom! The control band at the top is a little uncomfortable if you sit too long in it but I’m happy with the way it bring everything in. I took to a waist trainer, once again utilizing the @amazon prime account.