Before your first use of QardioArm 2, please make sure that your QardioArm 2 is fully charged using the USB C cable provided. If QardioArm 2 is not fully charged you may not be able to activate it.
When QardioArm 2 is charging the green light will blink. When the device is fully charged, it will show a solid green light.
Note: There is no on/off switch, QardioArm 2 is always on. We recommend charging your QardioArm 2 once every two months.