CAM-ULATA White Waterproof Non-blinking Bright LED Party Light for Lantern Paper Balloon Party Wedding Decoration, 60 Pack Great to illuminate a paper lantern, balloon or other things you want to decorate. Just twist the base to turn it on, very easy to use. With a hook at bottom, you can thread and hang them easily, or use wire connect them for a string light. Waterproof, high light, non-blinking, used for indoor and outdoor. Batteries: 3 x 1.5V LR41 in each led, working with 72 hours. 4 hours is optimal brightness.