Karlling Battery Operated White 40 LED Fairy Light String Wedding Party Christmas Decorations Defect rate less than 0.25%,If you receive the defect item.please contact us(Click The seller Name from your order detail page,Then Ask A Question) instead of Amazon for solution.Please keep way from the bad battery. High brightness and low consumption,Long service lifetime;With control switch to adjust the switch and flashing String length: Approx. 4.0m;LED Quantity: 40;LED space: 10cm Powered by 3 x AA battery and 3 Only( not included ),Will Not Hurt you at all. Karlling 40 LED battery string light;Color: White