Sony Launches REON POCKET PRO Plus Wearable Thermo Device

Sony Electronics announced the REON POCKET PRO Plus on May 12, 2026, marking the latest evolution in its wearable thermo device series. The press release from PR Newswire details a device designed to deliver personalized thermal comfort through advanced cooling and heating technology. This represents Sony's first major U.S. market introduction of the REON POCKET line since its 2019 debut in Japan.

The core technology relies on the Peltier effect rather than traditional fans. A metal cooling plate sits at the base of the neck, targeting the circulatory system directly. Think of it as a tiny ice pack with a USB-C port, but one that actively adjusts rather than passively melting. The device achieves up to 20% higher cooling performance compared to the previous model, with body surface temperature reduced by an additional 2°C in SMART COOL mode.

Sony's Singapore press release confirms the technical specifications and regional availability. The REON POCKET PRO Plus (model RNPK-P1PT) retails at $349 in Singapore, with pricing of £199 in the UK and €220 across Europe. The U.S. launch is scheduled for summer 2026, exclusively through Sony's online store. Early bird promotions in some markets offer $30 off through June 30, 2026.

The Adaptive Hold Design represents a significant mechanical refinement. The neckband's flexible tubing diameter has been increased, improving holding force by approximately 40% according to Sony's internal measurements. This matters because thermal transfer requires consistent skin contact. Micro-movements during walking or light activity previously disrupted cooling efficiency. The new design maintains stable contact while preserving comfort for extended wear (a problem that plagued earlier iterations, honestly).

Battery life reaches up to 15 hours at SMART COOL mode settings. The device operates fan-less, designed for quiet use in professional or social settings. There's still a small fan to circulate air across the cooling area, but the primary thermal exchange happens through direct skin contact with the Peltier plate. An automatic shutdown mechanism protects against overheating, though the device is engineered to dissipate heat efficiently through its adjustable Air Vent Cover.

The airflow exhaust system features adjustable components. Users can extend the vent length and modify its angle to accommodate different collar heights, fabric types, or layering. This flexibility enables efficient heat dissipation regardless of clothing style. The device remains visually discreet under shirts or blazers, supporting everyday usability in both casual and professional environments.

Complementing the main unit is the REON POCKET TAG 2, a wearable sensing device approximately 18% smaller than its predecessor. The rear clip has been replaced with a strap hole and carabiner, offering versatile attachment options for bags or belt loops. This tag measures ambient temperature and humidity in real time, providing additional context for thermal adjustments. The original REON POCKET TAG remains compatible with both the new PRO Plus and REON POCKET 6 models.

Multiple sensor types continuously monitor skin temperature in real time. These sensors work with an updated algorithm to dynamically adjust cooling and heating output based on changes in the wearer's condition and surroundings. The closed-loop system helps maintain consistent performance and comfort throughout the day. Users can set a temperature range in the mobile app, and the device automatically adjusts the cooling plate temperature accordingly.

Independent reporting from Engadget corroborates the cooling improvements and notes the device's evolution since its 2017 development began. The publication highlights that while the hardware design remains similar to the REON Pocket Pro, the thermal efficiency gains are meaningful for users in hot climates or physically demanding environments.

The REON POCKET series has evolved to support diverse use cases: commuting, travel, outdoor work, and leisure. Sony positions this as a practical, all-day solution rather than a situational accessory. The company remains committed to advancing personal comfort technologies while aligning with broader environmental and sustainability goals, leveraging expertise in sensing and thermal management.

Whether users actually pay $349 for a neck-mounted cooling device remains the real question. The technology works, the engineering is sound, and the battery life is impressive. But convincing consumers to wear a thermal device under their collar every day is a different challenge than building one that functions properly. Time will tell if this becomes a summer essential or a niche gadget for heat-sensitive professionals.

Artūras Malašauskas is an AI Systems Integrator with 20+ years of production-grade web engineering experience. He has designed, shipped, and scaled enterprise Python/PHP systems for logistics, SaaS, and public-sector clients. For the past year, he has focused exclusively on AI integrations: deploying open-source LLMs, building generative media pipelines (image, audio, video), and engineering multi-agent workflows for real production environments. His standard: reproducibility, security, cost-efficient inference—no vaporware. He documents and evaluates emerging AI tooling, separating verified capabilities from marketing noise. Technical editor at: muza-ai.eu, ai-verslas.lt, ai-naujinos.lt Connect on LinkedIn