Batteries: 3 * AG3 in each led. Long illumination time,brightness will go down as time goes Easy to use - Turn LED on and off by twisting the base Illuminate wedding paper lanterns, floral arrangements, garlands, bouquets, bridal sets, centerpieces, place settings, candle votives, vases, balloons. Perfect for decoration of parties, weddings, birthdays, hotels, anniversaries, restaurants, christmas, halloween, lounge, bars and so on. Material: Plastic colour: As shown Package Contents: 20 x lights Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.