What should I do if there is a low volume issue with my Baseus Bd1 Bean Shaped Bluetooth Earbuds?

For adjusting wearing and fit, align the C-bridge horizontally (parallel to the ground), rotate the earpiece until the speaker directly faces your ear canal, and gently adjust upward/downward to match your ear contour. Check for any foreign objects blocking the earbud outlet and clean it gently with a soft-bristled toothbrush dipped in alcohol if needed. (Page 3)