YISHU 6pcs Fluorescence Stick / Electronic LED Flash Bracelet Light-emitting Bracelet External diameter8.5cm(3.35") Internal diameters6.5cm(2.56") Replace batteries ( 3*AG3 ), lasts over 10 hours Multicolor Flashing Barette -Rainbow Colors (Alternating Multicolors) , Rave Party Hand Accessories Include: 6 LED bracelets