Enjoy great savings and variety with our string lights. Each break, fade, and chip resistant 16.5 strand contains 60 Warm White LED lights. With the end-to-end plug in, up to 42 strings may be connected. The lighted length of each string is 15.5. Perfect for indoor or outdoor use. Contains Energy Star compliant, low energy, bulbs that do not need to be replaced (25,000 hour average bulb life). Each bulb measures 1/4 x 3/16. UL tested and approved.