KAGA FEI Develops Ultra-small Bluetooth Low Energy Module Compatible with Bluetooth 6.0
KAGA FEI Co., Ltd., a global provider of leading short distance wireless modules, announced today the ES4L15BA1 Bluetooth Low Energy module.
This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20241010420482/en/

ES4L15BA1 (Photo: Business Wire)
The module has a built-in antenna and has obtained various certifications. Consequently, it reduces the development time and certification costs for next-generation wireless IoT products such as IoT devices, small medical/healthcare products, and wearable devices that require a compact form factor, enabling faster time-to-market.
The ES4L15BA1 also supports channel sounding for accurate distance measurement, providing further convenience for applications requiring reliable distance information or enhanced security based on device distance information, such as unlocking devices based on their proximity.
Furthermore, it supports PSA*1 certification, making it easier to develop IoT devices that meet advanced security requirements. Mass production is scheduled to begin in September 2025. KAGA FEI will continue to respond to market needs and expand its product lineup.
Product Features
-
World’s Smallest Compact Form Factor
The ES4L15BA1 utilizes our proprietary technology to integrate into a 3.25x8.55x1.00mm form factor, achieving the world’s smallest size as an antenna-integrated module compatible with Bluetooth 6.0. -
High Processing Power and Large Memory
The ES4L15BA1 includes an Arm Cortex-M33 processor, RISC-V coprocessor, 1.5MB of non-volatile memory, and 256KB RAM, providing excellent processing performance and high processing efficiency. -
Built-in Antenna and Pre-Certified
Features a built-in antenna, eliminating the need for antenna design. It has obtained Bluetooth qualification and certifications for Radio Law MIC (Japan), FCC (USA), and ISED (Canada), reducing time and costs. In addition, it supports Bluetooth SIG qualification for the latest Bluetooth 6.0 standard, which enables channel sounding function for accurate distance measurement.
Product Availability
Sample | : February 2025 |
Start of mass production | : September 2025 |
About Trademarks
The product names and other proper nouns mentioned herein are trademarks or registered trademarks of their respective companies.
*1. PSA (Platform Security Architecture): PSA is a certification scheme led by Arm. Level 3 is the highest level of certification for protecting IoT devices from physical and software attacks.
KAGA FEI website
https://www.kagafei.com/jp/eng/
Disclaimer
Product specifications, service content, etc. stated in the news release are as of the date of announcement and is subject to change without notice.
View source version on businesswire.com: https://www.businesswire.com/news/home/20241010420482/en/

Subscribe to releases from Business Wire
Subscribe to all the latest releases from Business Wire by registering your e-mail address below. You can unsubscribe at any time.
Latest releases from Business Wire
SII Begins Mass Production of the World’s Smallest (1.0 × 0.8 × 0.32mm) Tuning-Fork Crystal Resonator “SC-10S”9.12.2025 03:00:00 CET | Press release
Achieving Both a 33% Reduction in Mounting Area and Low ESR Seiko Instruments Inc. (President: Yoichi Endo; Headquarters: Chiba City, Chiba Prefecture; hereinafter “SII”) will begin mass production of the “SC-10S” (32.768kHz), the world’s smallest* tuning-fork crystal resonator measuring 1.0 × 0.8mm, starting in April 2026. *Based on SII research as of November 2025. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20251202800779/en/ Product Image-1 [Background of Development] SII has already been mass-producing the “SC-12S” (32.768kHz), one of the world’s smallest tuning-fork crystal resonators at 1.2 × 1.0mm. As wearable devices such as smart rings and smartwatches, as well as IoT devices, continue to become smaller, the electronic components built into these devices are increasingly required to support high-density mounting, low power consumption, and high performance. To meet these needs, SII leveraged its proprietary photol
Verimatrix: Signing of an Agreement for the Sale of XTD Assets (Code and Application Protection) to Guardsquare8.12.2025 17:45:00 CET | Press release
Sale of XTD assets (mobile application protection) including a portfolio of patents and a team of experts for an initial offer of $8.5m, the final price will be adjusted at the closing.Verimatrix refocuses on Anti-Piracy (video protection), the group's core business representing approximately 90% of its total revenue Regulatory News: VERIMATRIX (Euronext Paris: VMX, FR0010291245), a leading provider of user security solutions for a safer connected world, announces the signing of an agreement with Belgium-based Guardsquare, the leading provider of mobile application security, for the sale of its Extended Threat Defense (XTD) assets. Guardsquare, the creators of the open-source optimization tool, ProGuard, offers the most complete mobile application security platform on the market spanning automated testing and multi-layered protection, real time threat monitoring, and app attestation. Guardsquare’s 975+ customers are located in more than 95 countries and represent all major industries.
WNBA Champion Sabrina Ionescu Becomes Global Brand Ambassador for Ant International8.12.2025 17:00:00 CET | Press release
Four-time WNBA All-Star Sabrina Ionescu today becomes a new Global Brand Ambassador for Ant International, a leading global provider of digital payments, digitisation, and financial technology. This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20251208536426/en/ The partnership is built on a shared commitment to creating a more inclusive and sustainable world through empowering underserved communities and youth groups with sports and technology innovation. It marks an important step in Ant International’s journey to foster growth and expand access to financial tools through innovative technology. Ionescu serves as the first Ant International global brand ambassador from North America. “Sabrina embodies the spirit of perseverance and the passion for excellence that is driving young talents and small businesses around the world to uplift their communities,” said Douglas Feagin, President of Ant International. “As a legend in a spor
SABCS 2025: REVEAL GENOMICS Presents Major Advance in Predicting Brain Metastasis in HER2+ Breast Cancer8.12.2025 16:20:00 CET | Press release
The new HER2DX central nervous system (CNS) progression score predicts risk of brain progression in advanced HER2+ breast cancer, addressing a major unmet need in identifying patients at the highest risk of CNS involvement. During SABCS 2025, the company presents a total of 7 studies with 1,300 tumor samples analyzed, covering HER2-positive, ER-negative, and triple-negative breast cancer (TNBC), representing one of the largest and most comprehensive genomic data contributions to the symposium. New clinical evidence includes superior pCR prediction compared with TILs, demonstration of real-time genomic testing feasibility in an international trial, and validation of RNA-based ERBB2 assessment to accelerate clinical decision-making. REVEAL GENOMICS, S.L., a Barcelona-based biotechnology company focused on advancing precision oncology through biomarker innovation, announced today the presentation of seven studies at the upcoming San Antonio Breast Cancer Symposium (SABCS) 2025, held Decem
NetApp Advances EMEA & LATAM Presence with Appointment of Willem Hendrickx as Customer Demand for AI Accelerates8.12.2025 16:15:00 CET | Press release
A leader in driving enterprise transformation, Hendrickx brings nearly three decades of experience, strengthening global partner ecosystems and customer relationships across regions NetApp (NASDAQ: NTAP), the intelligent data infrastructure company, today announced the appointment of Willem Hendrickxas Senior Vice President and General Manager, EMEA & LATAM, effective January 5, 2026. Hendrickxwill lead NetApp’s business strategy, go-to-market execution, and partner engagement across Europe, the Middle East, Africa, and Latin America. Reporting to NetApp President César Cernuda, Hendrickx brings a deep regional knowledge and track record of building high-performing teams, further enabling the acceleration of NetApp’s international footprint by helping global customers navigate the evolving demands of hybrid cloud and AI-driven data infrastructure. Hendrickx holds a Master’s degree in Applied Economics from KU Leuven and is based in Brussels, Belgium. “Willem joins NetApp at a pivotal t
In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.
Visit our pressroom