While this is not the cheapest phone-extension cable, which can be found online, but it is cheaper than most store products. Already from the first impression you get the feeling a piece of quality goods to have in hand (well-made compact metal connector and a stable cable) and not any one of these cheap products, which are usually commented with appalling reviews. Also on the sound quality I can find no problems
The only drawbacks: The cable is relatively thick, but what I like to take into account --selbst for unterwegs-- long as it stops. Stable it affects all yes. A kink protection or the like does not exist, and I'm not sure if one is ever needed in this cable.
If the time is not any reason / defect occurs that contradicts this terrific first impression, I hereby give the absolute buy recommendation for this product.