These are two very small and neat bluetooth earphones. They are not physically connected to themselves- or anything else.
They come in a small plastic drawstring sack with only the instructions, in Chinese and English. Well, I say English, but only in the broadest sense. I just don't understand why Chinese electronics manufacturers don't seem to have access to a fluent English speaker. In terms of practicality, this manual isn't completely useless, but not far off. To be fair, this problem does seem to be common to many far eastern companies.
Getting bluetooth earphones connected has always been a bit hit and miss, but due to the Chenglish instructions these are more miss than hit. Setting up is also complicated by the fact that these are two independent earphones that both have to be connected to your phone and also to each other. I got them connected to my phone fairly quickly, but I only got to pair them to each other by pure luck. I just kept trying out various long and short button presses, separately and together until they eventually decided to speak to each other. How I did it I have no idea, so I just hope I don't have to do it again.
These really are very small, light and neat. They fit in my ears very comfortably and securely. As with all earphones the fit is crucial to the sound quality, and as these only come with the fitted eartips, it is fortunate that, for my ears at least, the sound really is not bad.
They are very low cost. This is reflected in the lack of extras, simple packaging, and the bizarre instructions, but, so far, in terms of the quality of the product, they are very good value.
I have used these in all sorts of situations, from just sitting down, to walking, to running for long distances and to strenuous work outs at the gym, and they have been completely reliable. They switch on and connect each time. They are very comfortable and completely secure in my ears. The sound quality continues to be quite satisfactory. So, all in all, an amazing bargain. They are available from Amazon for £12.90 (at the time of writing).