Electric roller skates, roller shoes, birthday gifts for children, please order according to the size chart. [Light Color] Red, green, blue, yellow, sky blue, purple, white (7 static colors + 4 dynamic modes) [Switch and Charging] Hidden illuminated switch button, press to turn on. Each time you press it, it changes to another light mode. Press the switch 11 times or press for 5 seconds to turn off the light. The battery lasts for up to 6 hours on a 2-hour charge, and the USB charger can charge two sneakers at the same time. Detachable Roller SkatesThe first wheel can be detached and used as a single wheel skate. You can hide the rear wheel by pressing the button at the heel and it will turn into a regular sneaker. Two wheels - feels like inline skates. Note: Please refer to our size chart before purchasing. To protect the lighting system and personal safety, please do not jump wearing shoes.