Do I need to press a button or take action to start tracking my sleep? No, your CZ Smart Gen 2 Hybrid smartwatch will automatically track your sleep so you don't need to take action to enter or exit sleep mode. Related articles Why is my sleep data not being tracked? Do I need to press a button or take action to start tracking my sleep? User Manual for CZ Smart Gen2 Hybrid Smartwatches (YF30) Why is my sleep data not tracking in my Gen2 Smartwatch in the Citizen Connected Application? How can I access the settings menu?