VIVOSKY Fashion Electronic Light-up Flashing LED Bracelets for Night Rave Party, KTV -6 Pcs / Pack Material: PS+ PVC + Electronic Components Color: Pink, Purple, Green, White, Orange CAN BE USED FOR VARIETY OF EVENTS AND OCCASIONS - Best Use For Fun, Parties, Birthdays, Festivals, Edm, Halloween, Weddings, Night Activities, Bonfires, Disco, Carnivals, Halloween, Dubstep Party, Indoor And Outdoor Activities, Rave Party Favors And More. Outside Diameter: 8.5cm, Inside Diameter: 6.5cm. Fits On Every Children, Men And Women. You Can Place Them Anywhere, On Your Wrists, Arms, Kid's Ankles, It's Totally Up To You. Including 3 AG3 changeable button battery, which can light continuously for 20-30 hours. Suitable for KTV, Birthday party, bar .etc.