The test of time is of particular importance in power supplies (See 2024 UPDATE).
I have already changed 3 for the same laptop within a period of 3 years.
So, I haven't had this one for long enough to say for sure that it is durable.
But, compared to what I have gotten so far, it is well-designed and well-made. It is recognized normally by the system, which means it delivers the promised power (among other things).
It gives you the feeling of sturdy and durable construction, even though it is small.
It does get quite hot, but I have never had one that doesn't - and even hotter.
I am very happy that I got it (as for how long it lasts, I don't know).

2024 UPDATE:
Two years and 3 months later, still going strong!
Unfortunately, it fell, as usual, and opened up, because its drawback is the plastic hooks that hold the side covers in place, which are small and weak and broke easily, but with a little colored sellotape it became a partridge (and a doll) and continues to hold the weight of my laptop effortlessly.
It is good in terms of electrical materials, something not so common.

Excellent power supply. It does not create any issues in the recognition and operation of my Dell.