When wearing the device check to see if you get the “happy sound” indicating that the device is seated correctly for use.Instructions for correct placement:
Recommendations for choosing the right SmartSleep Device size
- Ensure that the front sensor is in the middle of your forehead
- The strap is tightened correctly so the headband fits snugly and comfortably over your head
- The sensor behind your ear is seated properly and securely
Size M: Head circumference 51 – 58 cm
Size L: Head circumference >58 – 66cm
Place a string or fabric tape measure around your head about 1/8" above your ear, across the middle of your forehead, completely encircling your head. Hold the tape firmly, but not too tightly. If your head measurement falls at the end of size (for example, 60cm), choose the smaller size.