Both speakers work, I can send you a video with audio to prove both sides work independently with no distortion out of flaws. No packaging, so I will give them to you in just a plastic bag.
Video used in the background:
https://www.youtube.com/watch?v=YwNs1Z0qRY0
Pick up at Tai Po Market Station. You can text me via the platform or reach me out directly at +9472 1254.