Sony's Reon wearable air conditioner saved my sanity through multiple heatwaves

Sony’s Reon Pocket Pro Plus, a $260 wearable air-conditioner, uses a Peltier-cooled metal plate against the neck and spine to lower blood temperature, delivering a 20% cooling boost—about two °C more than its predecessor. It can run up to 15 hours in Smart Cool mode (four to five hours under extreme heat) and includes quiet fans, an adjustable exhaust, and on-device controls, while an optional smart tag tracks ambient conditions though its reliability is mixed.