With a clear-view crystal plastic case, this 2-1/4" diameter LED Lighted Yo-Yo 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. The brilliant multi-color 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, whether it's for a school event, trade show, seminar, nightclub or company picnic or party favor! CPSIA compliant.