Lumsing&reg; Portable Wireless Bluetooth Speaker with NFC Built-in Microphone, Powerful Sound Rechargeable Battery up to 1 Day Playtime
After less than 2 months of low to moderate use, this speaker has distortion, crackling and poor sound amplification.  It's just poor quality.  It's equivalent to money made of flash paper!  Very disappointing purchase.  (Not used daily, not used over 3 hours at a time, not used more than 4 hours in any given day; after 1st week not used consecutively or for several days at a time = low to moderate use)