M320 Bluetooth Alu headphones by CSL-Computer

I can remember a time when Bluetooth headphones were premium items and you were lucky to find a pair for under £100. Now you can get a perfectly decent quality set like these for under £20.

Inside the box aside from the headset itself was a standard mini-jack to mini-jack audio cable, a charging cable, and a small, hard to read, but well-written User Guide in good English. I reproduce the User Guide at the end of my unboxing video.

The headset is lightweight but looks perfectly fine with an attractive matte grey finish. The body feels a bit flimsy but well made with no visible wires, weak joints or poor stitching in the padding, which is soft and comfortable if not over generous. Time will tell and if something fails in the future I will update the review accordingly.

The headset is supplied with a plain audio cable and a USB to micro-USB charging cable but both work perfectly adequately. The track and volume controls on the right earcup are nicely positioned and very easy to find and identify by sight and by touch. The headset folds well for storage although no case is provided which for the price is understandable.

Bluetooth Pairing simple enough and achieved in the usual way by depressing the Multifunction/Power button for several seconds. Once paired I found the connection to be stable and strong. The headset will also work with the supplied audio cable when the battery fails and there is little if any difference in quality when used in either mode.

The main feature of any headset is the audio quality, and bearing in mind that this is a budget device I was fairly happy with the sound. There is a decent amount of bass and it is clear, smooth and undistorted. Mid tones are clear and detailed and very easy to listen to. The sound is rather flat but comfortable and never abrasive or sibilant, at least to my ears. The sound is OK, not bad but nothing to write home about. I made and received test calls using the built-in microphone and both sides of the con..