Atmotube PRO comes precharged. But to prevent accidental turn-on during transportation, the main button is disabled. To activate the device, connect it to the charger.Atmotube PRO First Switch-OnRelated ArticlesAtmotube PRO Recovery InstructionsI cannot connect to my Atmotube PROCan Atmotube PRO connect to multiple smartphones?How do I charge Atmotube?Switching on your Atmotube PRO 2 for the first time