K-Tech Mini Portable Speaker, 3W Line-in Phone Speaker with 3.5mm AUX Audio Interface, Plug and Play for iPhone, iPad, iPod, Tablet, Smartphone

Is the audio quality good? Of course not. It's the size of a golf ball and inexpensive. But it works, and all you have to do is turn it on and plug it into the auxiliary jack of the device of your choice! It's actually plug and play, unlike a different device that looked very similar and CLAIMED to be "plug and play" but actually requires a Bluetooth connection to use. This thing, you literally just turn it on (it arrived to my house with a usable charge in the battery), plug it in, and control the volume using your phone or computer or whatever it's plugged into. That and the fact that it comes with a little charging cable (micro-USB), this thing is exactly what you want if you're looking at these types of speakers in the first place.

Exactly what I needed/wanted. Cordless. Great sound.

Clever design that provides mini external speaker with decent sound. Great for travel or office desk

DO NOT PURCHASE! Ordered 1 and it worked great…for 2 days. Nbd, ever the optimist, thought I just got one bad lemon. Asked for a replacement. Turns out the whole bushel of these are lemons. The replacement worked literally one single time. Turned it off and it never came back on. Tried the whole day. Made sure it was charged…nope nada nothing

NOT USB-C! I picked this one because out of a lot of similar listings, this one was listed as having a USB-C charging port. Well, it doesn't. It has a micro USB port.

I use this to improve on the audio from a small shortwave radio. Its frequency response is much improved over the stock speaker in the radio, making listening more pleasurable. It recharges quickly using a USB-C cable. I reccomend it for anyone who has a device with a small speaker and has a standard 3.5mm audio out jack, and wants to improve the audio.Note that is not a wireless Bluetooth speaker. It plugs directly into the speaker output jack on your radio, MP3 player, or other audio device. Its volume is controlled by the volume control of your audio device.I have not tested the battery life and the size of the battery is not specified. However, in my use so far, it seems to have enough battery power to last quite a long time. It takes about 45 minutes to recharge.

This mini speaker is surprisingly loud for its size. I upgraded my iPod Nano; it’s too big to accommodate the 30-pin connector, but thankfully my battery is fine. I was looking for a smaller speaker and wanted something really compact, even at the expense of quality. Since this was the smallest option I found, it turned out to be a good purchase. I've had it for only 48 hours, but I'm happy with my decision.

This only works if it is charging when I turn it on.I know other people who have them and love them, so it must be just a problem with mine.