Harry Potter Love Potion String Lights: What is it? It’s a series of LED lights designed to look like the Love Potion bottles that you can get at the Weasleys’ shop. &, as is sometimes the case with love, there are strings attached! About the product This string light is 100% officially licensed Harry Potter merch. It consists of 12 LED lights on a 2.5 metre cable. Each light measures 5.5 cm x 4.5 cm & glows like the cheeks of a young wizard in love. How is it powered? By magic, of course. Oh, & 2 AA batteries, which aren’t included. Why you should buy it Like Ginny Weasley, you love Harry Potter. &, we think it’s only fair that the Wizarding World sends a little love back your way.