OKSTATION&reg; Color Changing LED Party Lights Waterproof Submersible Light for Balloon Paper Lantern Wedding Decoration light (pack of 12/24/36/48 pcs) (24) Turn LED on and off by twisting the base With a hook a bottom, you can thread and hang them easily Size: 0.5"W x 1.25"L Batteries: 3 x 1.5V LR41 in each led, 8 hours+ ( yes, batteries are included,Batteries are replaceable) Non-blinking mini party lites illuminate floral arrangements, centerpieces, place settings, candle votives, paper lanterns, balloons and more