IQbuds2 MAX does not have an on/off switch. However, when placed in the Charge Case the buds automatically turn off.
When you take the buds out of the charging case they automatically turn on.
The units also have sensors to detect when they are in the user's ears and will go into a lower power state when removed from the ears.
When not in use, it is recommended to put them back into the Charge Case to protect and recharge the IQbuds2 MAX.