Top Tech Audio KL-6 Bluetooth Speaker | 4 Inch LED Rechargeable Wireless Portable Speaker Sound System with Microphone | Includes a Handle for Easy Transport | RED

The lack of volume control wheres the battery down in just over an hour. There are no directions of how to turn the flashing lights off which also consume power so you end up with a speaker that is very loud to start and then after a beep it will go a little lower then another beep to let you know your battery's drained before it turns itself off.If you only plan on using a Bluetooth, you can control the volume on your phone but if you want to directly connect a USB or microSD you are SOL on volume control. Unfortunately I bought this and was not able to use it more than once and that was for the radio. It was after 30 days that I realized the issues with everything but direct Bluetooth control so I'm kind of stuck with it. I did not purchase it from Amazon, I came to this site to see if there were any answers that didn't come with the two page "owners manual".I didn't find any additional answers here either.When I have more time I'll search for a speaker that does not have issues with volume when using radio USB and micro SD card.Before I forget, the USB & Micro SD will only play if there's more than 32 gigabytes available on it. Anything less (16gb) has issues with playing it.