Abhishek ChakrabortyThanks for your feedback!
From what I’ve seen, the goals of both solutions are the same: make people feel comfortably cool.
EMBR Labs’ Wristify (now the Wave) uses a single thermoelectric module (TEM) and cycles it on and off to cool the skin at the wrist. The drawback of this solution is that the body is likely to become desensitized to the on-going application of cooling at a single site.
In physiology, this is called “sensory adaptation”: the brain’s sensation of cooling will diminish rapidly after 15 seconds, and be almost completely gone after 25 seconds. It will then take about 45 seconds for the brain to be ready to sense cooling at that site again - but this duration increases if the skin does not warm up to it’s typical temperature.
The Cool India solution solves this problem by using multiple TEMs in a unique way. The TEMs are placed on non-adjacent dermatomes of the body and cycled so that sensory adaptation doesn’t counteract the cooling sensation.
This was a great question - let me know if I can provide any additional details!