Wearable Technologies Design Metaura Pro Smark Wearable Air Condition by Wen Liu Metaura Pro Smark is a wearable air conditioner worn around the neck. The device combines semiconductor cooling plates with a vapor chamber to spread cooling evenly over a large area. The outer surface is made of skin-friendly silicone to avoid skin irritation and the risks of excessive cold. Sensors measure the ambient temperature, and an intelligent control system adjusts the power and the working mode to keep the wearer within a comfortable range. Heat therapy is also offered to relieve neck fatigue. The unit powers on when worn and switches off when removed.