SumDirect 12/30/50/100 Pack LED Party Lights Blinking Waterproof Lights For Paper Lanterns Balloons Floral or Wedding Decorations (12, Yellow) Blinking waterproof lights Lights last for up to 8 hours Size:0.5" diameter x 1.25" length Perfect for decoration of parties, weddings, birthdays, hotels, anniversaries, restaurants, christmas, halloween, lounge, bars and so on Turn LED on and off by twisting the base.