These lights are very dainty and pretty. They are battery operated, perfect for placing somewhere out of reach of a wall socket but also when you don't have space for lots of wiring, or just want it to look neat. I bought them as a decoration for my room all year round and for that they work perfectly, I can just switch them on from the battery pack whenever I want on occasion.
I'd probably recommend using rechargeable batteries though as they need changed every month.
For the quality and price, because they don't look like cheap fairy lights, they are definitely worth it and exactly what I wanted.