From Experimental Gadget to Everyday Wearable Air Conditioner
Sony’s latest personal cooling wearable, the Reon Pocket Pro Plus, continues a product line that first emerged as a crowdfunded experiment in 2019 and has since evolved into a more refined neck cooling device. Unlike a smartwatch or fitness tracker, the Reon Pocket series focuses on temperature control technology rather than steps or heart rate. The Pro Plus model still sits discreetly at the back of the neck, under a shirt collar, positioning its cooling surface where blood vessels run close to the skin. This design aims to make temperature changes feel faster and more noticeable for commuters, office workers, and people spending time outdoors in hot weather. As the market for personal cooling wearables grows beyond niche gadgets, Sony is positioning the Reon Pocket Pro Plus as a practical tool for dealing with increasingly uncomfortable daily heat.
How the Cooled Metal Plate Delivers Stronger Neck Cooling
At the core of the Reon Pocket Pro Plus is a thermoelectric system based on the Peltier effect: an electrically cooled metal plate pressed against the base of the neck. Instead of simply blowing air like a miniature fan, the device actively draws heat away from the skin, then uses a small fan only to move warm air away from the unit. Sony claims the new model improves cooling performance by about 2 degrees Celsius, or 3.6 degrees Fahrenheit, compared with the previous generation. That increase is paired with a refined algorithm that continuously monitors both the device’s surface temperature and ambient conditions to fine-tune the output. Together, the hardware and software upgrades aim to make this wearable air conditioner feel more powerful and more consistent, particularly in fluctuating environments like crowded trains, sun-exposed sidewalks, or non-air-conditioned indoor spaces.
Improved Stability, Safety, and Smart Temperature Control
While the overall shape of the Reon Pocket Pro Plus remains similar to the earlier Reon Pocket Pro, Sony has focused on comfort and stability for this generation. The unit is designed to sit more securely across the neck and shoulders, reducing wobble and the risk of slipping when you walk, cycle, or move quickly. That is important for a neck cooling device that needs constant skin contact for efficient heat transfer. Sony has also implemented an automatic shutdown mechanism intended to protect the device from overheating, adding a layer of safety for extended wear. The bundled second-generation Pocket Tag is smaller than before and acts as an external sensor, monitoring ambient temperature and humidity to inform the cooling algorithm. A companion smartphone app provides manual control and customization options, but the Reon Pocket Pro Plus can still operate independently for users who prefer a simpler, phone-free setup.
Battery Life and Use Cases: Up to 10 Hours of Wearable Cooling
Battery performance is a key differentiator for any personal cooling wearable, and Sony claims the Reon Pocket Pro Plus can run for up to 10 hours on a single charge when set to the second-highest cooling level. That runtime makes it more realistic as an all-day companion for hot-weather commutes, long office days in inconsistent air conditioning, or outdoor activities where carrying a traditional fan or cooling towel is inconvenient. Users can ramp the cooling up or down depending on conditions, potentially trading intensity for longer endurance when needed. With its discreet form factor, active cooling plate, and extended battery life, the Reon Pocket Pro Plus illustrates how temperature control technology is moving closer to wearables we keep on as routinely as headphones or fitness trackers—offering a personal, portable microclimate rather than a room-wide blast of cold air.