Snuza Hero detects even the slightest movement and will alert you if your baby’s movements are very weak or fall to less than 8 movements per minute.
If no movement at all is detected for a period of 15 seconds, Halo will vibrate gently. Often this vibration is enough to rouse the baby, and Hero will revert to monitoring mode.
After three vibration/rouse incidents, the Rouse Warning will alert you to the fact that your baby’s movements have stopped for 15 seconds on three occasions.
If no further movement is detected for another 5 seconds, an alarm will sound to alert you.

• portable
• easy-to-use
• vibration stimulation after 15 seconds
• Rouse Warning
• audible alarm after 20 seconds
• Movement-rate Indicator to warn about weak or infrequent movement

Here is a video to demonstrate how Snuza Halo works.