I have had these specific bulbs for a week, so I cannot judge their durability over time. However, I see that with solar charging (my balcony is south-facing without obstacles and receives sunlight all day), the bulbs light up throughout the night. They are still on by the early morning! It has a button to select different programs as well as an ON/OFF button. The cable definitely needs some attention as it is very thin, but it is not something tragic. The only negative for me is that while I expected warm lighting (yellow, as shown in the picture), they are completely white, like ice. If this does not bother someone, I highly recommend them.