The Cómodo gear is worn around the neck and contains three small Peltier elements that cool the blood ﬂowing through carotid arteries. It sends heat to a water-cooled heat sink worn on the waist and, according to Fujitsu, the system can cool the body even at temperatures above 35°C.
The cooling unit weighs around 170g and the radiator/battery is around 840g. Fujitsu says it is ideal for people working outdoors or without access to air conditioning, including many in the engineering and construction sectors. The rechargeable lithium-ion battery oﬀers two-to-four hours of cooling and takes three hours to charge.