... big order.LED color:white,red,blue,green,colorfulPowered by CR2032 3V button cell battery (Installed) Package: A pair silicone LED bicycle ... big order.LED color:white,red,blue,green,colorfulPowered by CR2032 3V button lithium battery (Installed) Package: A pair silicone LED bicycle light ... forget to turn off the switch after use.Remove the batteries,when you are not using the lamp for long period ...