Easy Operation - White, non-blinking.These lights are easy to use, just pull out the insulation film before putting them into the balloons, paper lanterns, vases, bottles or any centerpieces you would like. Mini Ball Light - These mini ball lights are perfect for paper lantern, balloons, or party dcor, wedding dcor, and etc. Add a wow factor to any Wedding, Engagement party, Disco, Camping, Barbeque and any other use that you can use your imagination for Ultra Long Lasting - Bright Led, power saving, long service life. 2 x 1.5V LR41 battery included,working with 48 hours, 12-24 hours is optimal brightness. Reusable Balloon Lights - It can insert the plastic piece it came with that separated the battery back on to save the battery life.If you plan on reuse save the little tabs that you pull out to activate them. The replacement batteries are LR41.