augment AI Inc. launched the third phase of crowdfunding for its “wena X,” the world’s smallest smartwatch, on September 18, 2026. Driven by immense interest following its spin-off from Sony—which pushed total raised funds past 600 million yen—the campaign builds on high expectations for new specialized bands crafted for 24-hour wearability.

Key Highlights and Overcoming the 600 Million Yen Funding Milestone

augment AI Inc. launched Phase 3 of its crowdfunding campaign for “wena X,” the world’s smallest smartwatch, on GREEN FUNDING, running from September 18 to December 17, 2026. Following its initial launch on March 20, 2026, wena X generated overwhelming demand, reaching its initial 10-million-yen goal in just 4 minutes and passing 100 million yen within 40 minutes. It went on to cross 300 million yen in just 5 days. Including Phase 2 (June 18 – September 17, 2026), total funds raised as of September 17, 2026, reached 622.12 million yen—a 6,221% funding rate—with 11,264 backers. This achievement set a new record for the highest crowdfunding amount ever raised by a Japanese startup. Responding to passionate backer feedback, Phase 3 introduces an expanded lineup of dedicated product options. The following diagram illustrates the funding trajectory behind this milestone achievement.

Capitalizing on this momentum, the company aims to further enhance the overall user experience.

Unveiling Two Specialized Bands for Fitness and Sleep

To coincide with the Phase 3 launch, the company announced two new specialized bands tailored to different lifestyle needs. The wena X features a unique 2-way architecture, allowing users to effortlessly switch between a traditional wristwatch style—attaching their favorite watch head—and a standalone smart band style with a single touch. To support continuous 24-hour wear from morning workouts to corporate environments and nighttime sleep, these new bands target specific user environments. The first is the workout-focused “wena X sports band.” Made from durable yet flexible fluoroelastomer, its underside features a leaf-venation-inspired pattern engineered to wick away sweat. Available in Urban Navy and Sky Gray, crowdfunding early-bird pricing starts at 3,960 yen, with shipping scheduled for March 2027 onwards. The second is the sleep-dedicated “wena X sleep band,” currently under development with a focus on skin comfort and a washable design for daily hygiene. Full specifications will be released in early October 2026.

Technical Innovations and Evolution of wena X, the World’s Smallest Smartwatch

Breakthrough Module Engineering: The World’s Smallest Form Factor with a 1.0-Inch+ Display

The wena X is the world’s smallest wearable device among smartwatches from major manufacturers equipped with a full-color display of 1.0 inch or larger. This achievement is enabled by an innovative module architecture that concentrates key electronic components—including the circuit board, sensors, and battery—entirely inside the clasp mechanism. By housing the electronics within the buckle, the design minimizes the bezel footprint around the display while preserving the freedom to attach any traditional watch face. Compared to its predecessor, the wena 3, the overall module size has been reduced, drastically improving wrist fit. Furthermore, the device runs on a proprietary lightweight, ultra-low-power system based on a Real-Time Operating System (RTOS). This allows wena X to deliver a crisp full-color display while maintaining a battery life of roughly one day to a full week, freeing users from constant charging anxiety. This design philosophy of integrating cutting-edge technology without compromising the timeless aesthetic of traditional timepieces has earned acclaim from gadget enthusiasts and watch collectors globally. A conceptual diagram of this engineering architecture is shown below.

This ultra-compact modular design serves as the product’s primary competitive edge.

High-Precision Sensing and Seamless Gesture Controls

wena X is packed with advanced technology across all operational fronts. In healthcare, augment AI partnered with sleep analysis startup ACCELStars to significantly elevate the accuracy of sleep tracking and data interpretation. Beyond heart rate and accelerometer sensors tracking vital metrics, the device features over 130 sport modes to cover everything from casual daily wellness to rigorous athletic training. For interaction, wena X introduces a gesture control feature that recognizes movements like snapping the thumb and middle finger, allowing users to navigate menus without touching the screen. Complete with water resistance and smart notifications, wena X functions seamlessly as a personal assistant integrated into daily life. In an aging society like Japan, these sophisticated health monitoring capabilities elevate the device from a tech gadget into an indispensable tool for preventive health care.

Corporate Spin-Off from Sony and Future Wearable Market Outlook

Independence from Sony and Startup Agility

The wena series originated in 2016 within Sony’s internal venture program, the Sony Startup Acceleration Program. However, in February 2026, Sony discontinued support for the “wena 3,” signaling its practical exit from the smartwatch market. Prompted by an outpouring of support from loyal users requesting a successor, founder and project leader Teppei Tsushima decided to spin off the venture, establishing augment AI Inc. in July 2025. The new startup acquired the wena trademark, patents, and the entire engineering team from Sony, ensuring seamless development continuity. Sony Group also participated in augment AI’s 170-million-yen seed funding round, maintaining indirect support. By shedding corporate overhead and transitioning to a lean startup team, augment AI gained the agility needed to execute bold, specialized product development for a dedicated niche community. The diagram below illustrates the innovation structure of this corporate spin-off and agile development transition.

Future Roadmap and Market Trends in Wearable Tech

Looking ahead, product fulfillment for Phase 1 backers will begin sequentially in late December 2026, while Phase 3 shipments are slated for late March 2027 onward, leading into a broader retail rollout later in 2027. Japan’s smartwatch market is projected to expand from USD 1.27 billion in 2025 to USD 1.92 billion by 2034, registering a compound annual growth rate (CAGR) of 4.73%. Growth is driven by rising health consciousness, an aging population requiring continuous health tracking, and increasing demand for personalized tech. Transitioning from a corporate spin-off into a high-growth startup, wena X serves as a landmark case study for corporate carve-outs in Japan’s manufacturing and tech sectors. As demand for health-conscious wearable technology accelerates, wena X stands out as a compelling model that bridges hardware innovation with deep community engagement.

Reference Pages

• 【augment AI Inc. Press Release】https://prtimes.jp/main/html/rd/p/000000007.000179064.html
• 【wena Official Site】https://wena.jp/
• 【wena X Project Page】https://greenfunding.jp/lab/projects/9288

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