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perfect for concerts, festivals and ktv. there is no problem if it shines for more than 10 hours. they will make you stand out from the crowd and add some fun to the concert experience. perfect for motorcycle travel, night riding or running, clip them on your bike, scooter, yourself, and move forward like the wind. the color is bright and eye-catching. superior quality. light weight. children will also like them and like to wear them at night. take them home silicone luminous bracelet is made of all environmentally friendly silicone material, with built-in led electronic components voice control (music, sound induced luminescence, the greater the sound, the stronger the brightness).syi