Battery: Powered by 2pcs AG3 button cell batteries, (battery included and replaceable)OperationUsage : Tightening thread, it will ; Loosening thread, it will turn offIts function includes always 2-3 hours. Burn to 8 hours.Fit for anniversary celebration, party, concert, wedding, birthday, carnival, Christmas day, and high qualityLED lights for happy gathering partyEasy operation and beautiful decorationPerfect LED light decoration for parties and add pleasure atmosphereLights color: as picturesLight color: MulticolorSize: 1.4*3.3*1.2CMPackage include30x LED balloons lightsIncluded 60 AG3 BatteryOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.