Whether it's at a trade show, company party, school or nighttime event, our 2-1/4" diameter LED Lighted Yo-Yo with its clear-view crystal plastic case is a great gift that will draw attention to your logo! Yo-Yos are loved by kids and adults of all ages, because they're challenging and fun. Your choice of brilliant blue or green flashing LEDs are activated by the spinning action of the Yo-Yo and shine through the transparent case. The batteries are already included and installed, so they're ready to go!! CPSIA compliant.