Fairy lights are made of 7.2ft copper wire with 20pcs vibrant and high bright micro leds,which is bendable strong and durable Super easy to use - The battery compartment size is only 2*0.87inches, each with a very small ON/OFF switch, which is portable, super easy to operate and hide Long lasting batteries - The battery operated mini string lights pre-installed long life batteries, more than three days' constant use and will be longer if used with breaks, very convenient for you to replace batteries Safe to touch - Powerd by incredible low valtage CR2032 batteries, almost no heat , no risks, you can touch and place anywhere you like,your bed, tents and so on Waterproof and wide applications - These battery powered fairy lights are perfect for your wedding centerpiece, mason jars, craft project, DIY and home table decorations