AIR+ Family - N95 Protection for Loved Ones- watson หน้ากากผ่าตัด sg ,Launched in 2015, AIR + is Singapore's award-winning mask brand and innovator of the world's first smart mask system. The AIR + smart mask system combines an ergonomic N95 mask with a reusable snap-on Micro Fan that expels trapped heat, humidity and harmful carbon dioxide, helping users breathe better and comfortably.Srinagarind Medical Journal1. Watson KR, Shah MV. Clinical comparison of 'single agent' anaesthesia with sevoflurane versus target controlled infusion of propofol. Br J Anaesth 2000; 85: 541-6. 2.