To power ON your Ember, press and hold the Ember logo for 3 seconds until the display shows "HELLO."
Directly behind the Ember logo is a capacitive touch sensor, this is how Ember will know when you are interacting with it.
To power OFF your Ember, press and hold the Ember logo for 3 seconds until the display shows "OFF?" then tap the logo to confirm. The display will show "GOOD BYE" informing you that your Ember Travel Mug has successfully powered OFF.
Ember not powering on? Check out this article