Sony's new personal cooling device made me feel like a cyborg – but I don't think it's worth buying just yet

The Sony Reon Pocket Pro in-hand
The Sony Reon Pocket Pro (Image credit: Future)

When you think of Sony, what comes to mind? I’m guessing most tech fans think of the PS5, Alpha cameras, Bravia TVs, and maybe even Sony Xperia phones.

Inversely, I’d wager that “wearable wireless temperature regulator” wouldn’t make that list – but that’s exactly what Sony offers with the Reon series of thermal devices.

The Reon concept basically gives your body temperature a control slider. The device sits on the back of your neck, with a plate of thermal material against your skin. It’s held in place by two thin bands that loop around to your collarbone.

Now, Sony has released the Reon Pocket Pro, a larger, more powerful version of last year’s Reon Pocket 5 that promises to deliver even better cooling and control.

I recently went hands-on with the Reon Pocket Pro at a Sony event – keep reading for a breakdown of the device’s key specs and functions, and my impressions of this one-of-a-kind gadget.

The Sony Reon Pocket Pro is a wearable thermal device that offers cooling and warming via two thermal modules, doubling the total contact area from the Reon Pocket 5.

The device can be operated with its built-in buttons or via a handy app that visualises the amount of cooling or warming applied with sliders, and it also comes with a small badge-like sensor that adjusts your experience based on sunlight, external temperature, and humidity.

Sony has provided us with an approximate price of £199 for the Reon Pocket Pro – we haven’t heard any launch details for the US or Australia just yet.

So, with the tech specs out of the way, what were my impressions of the Reon Pocket Pro?

The Sony Reon Pocket Pro beneath a black T shirt

The Reon Pocket Pro is worn underneath your shirt (Image credit: Future)

Regarding the actual function of the device, I noticed a rapid change in temperature that I’m sure would have a decent effect on a hot day or in the hellish depths of the London Underground in summertime.

I also tried the 40-degree warming option, which had an immediate impact that I’m sure would be welcome through the UK’s cold winters.

Overall, I think the core concept of the Reon Pocket Pro is pretty fantastic – the idea of personal climate control mixed with the device’s Star Wars-like appearance had me feeling like a cyborg when I tried it on for the first time. It’s also very unique – there really is nothing else quite like it.

It’s also reasonably light. At 201g, the Reon Pocket Pro weighs a smidge more than the iPhone 16 Plus. Noticeable, sure, but not an issue.

However, I’m not sure if it was my posture or the way the neck straps were adjusted, but I couldn’t get the Reon Pocket Pro to sit in a way that felt correct during my few minutes of testing.

The device is built to follow the contours of your neck, but for me, it just didn’t feel comfortable. I can’t say I’d be able to forget I was wearing it, or keep it on through the length of a whole commute.

I’m a pretty tall and wide guy, so I’m no stranger to things not quite fitting me right, from headphones to living room furniture – but even so, I think some proper adjustability is a reasonable expectation from something that’s designed to be one-size-fits-all.

So, while I do think the Reon Pocket Pro is built from excellent ideas, I don’t think I can personally recommend one until the device gets some ergonomic updates. Of course, your experience may vary – let us know if you’re keen to try the Reon Pocket Pro in the comments below.

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Jamie Richards
Mobile Computing Staff Writer

Jamie is a Mobile Computing Staff Writer for TechRadar, responsible for covering phones and tablets. He’s been tech-obsessed from a young age and has written for various news and culture publications. Jamie graduated from Goldsmiths, University of London in 2024 with a bachelor’s degree in Journalism. Since starting out as a music blogger in 2020, he’s worked on local news stories, finance trade magazines, and multimedia political features. He brings a love for digital journalism and consumer technology to TechRadar. Outside of the TechRadar office, Jamie can be found binge-watching tech reviews, DJing in local venues around London, or challenging friends to a game of Super Smash Bros. Ultimate.

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