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The speaker sound effects are very annoying ,i.e., when it connects and disconnects from Bluetooth transmitter or other devices. I absolutely do not like the blue light at the base. It's constantly on when connected to a Bluetooth device and is extremely annoying, especially when you turn off the lights in your room. Even though the sound quality seemed okay to me and the fact that it was able to pair with my device fairly quickly. I would not recommend this speaker if you are like me and dislike the gimmicky sound effects and the constant irritating blue light at the base.
The product description says it has a 3.5mm aux cable. That is only partly true-ish. It is a short (2 feet long) HYBRID cable - not a dedicated 3.5mm aux cable. One end is full size USB and it Y-branches off into one micro-USB end and one 3.5MM phono end. The unit itself does not have a 3.5mm aux hole! It was completely useless for my needs. The company provided a ridiculously short, cheaply made Frankenstein cable that you will never be able to replace should it go bad. I just needed the speaker for a mini TV with a 3.5 mm aux output jack. I needed both a charging cable and a separate 3.5mm aux cable, each one at least 3 feet long. The fact that the unit doesn't have a phono plug is just unacceptable. I never got to see if it sounds good or not because I'm returning it.
So I purchased this for travel and it was not used frequently. Battery would drain when not used so I'd charge it up before traveling and it would be fine. that was the first few times. The last few times it would not hold much charge (30-40 minutes) and now will not hold any. Will work briefly with USB connected. For a product that might have been used 20 times over 2 years this is unacceptable. They went cheap on the battery and it's a shame as the rest of the product is very nice. Good sound, not too hard to figure out functions and the little blue light was a nice touch. Because of the battery issue, I can not recommend this product.
So frustrating. I did get a User manual in all sorts of languages but - to me - totally indecipherable. I have had to email the manufacturer numerous times to find out how the charging works. Discovered that i can't plug into my computer to charge because it blocks ALL sound while it's plugged in with the USB. (Plug into an outside outlet to charge.) The volume control is so confusing If i push the plus sign which is supposed to increase the volume it brings me back to the beginning of the podcast that i'm listening to. Maybe all bluetooth devices are like this. It's my first one and probably will be my last (all made in China with probably the same poor directions)