Portable Wireless Bluetooth 4.2 Speaker with Armband, Good for Sports, 5W Output, with Nice Sound and Bass, Built-in Microphone for Handsfree Phone Calls Black

I just bought my 2nd one of these to have one available in my vacation home. The sound and battery are great. Haven't tried the microSD yet. I give it 4 stars due to a bluetooth dropout problem. If you hold the speaker too close to your phone (I have an iPhone 6s), it drops out. I hook the speaker on one side of my body during walks and put the phone in my pocket on the other side. It will run uninterrupted for an hour. If I take out the phone and hold it in front of me, it will drop out. Looking at my iPhone settings, the bluetooth still shows connected, music is running, but no sound. I cycle the bluetooth connection and it's back on. Not a dealbreaker (for me), but a nuisance that drops it to 4 stars.

perfect for one or two people running or walking. we use it as the shower speaker. the only thing worth noting is that we have to disconnect using the device last paired with it because we couldn't find a way to force it to disconnect through the actual speaker.

Works fine but, wished it could be louder. Used it for our Youth Girls Run Group. Only could be heard by people running very close to me.

Perfect music