The All-New CORE 2; an Innovative Thermal Monitoring Solution for Sports Performance

CORE, a greenteg company, and the go-to body temperature sensor trusted by the world’s top cyclists, triathletes, and endurance athletes, redefines performance monitoring with the introduction of CORE 2—smaller, lighter, smarter, and packed with cutting-edge features designed to revolutionize how athletes manage thermal load during training and competition. Available globally at corebodytemp.com, CORE 2 is set to transform performance monitoring for athletes everywhere.

The next-gen CORE 2 sensor is 48% smaller and 30% lighter than its predecessor, delivering unmatched comfort and performance. Engineered in Switzerland, CORE 2 reflects the company’s ongoing mission to empower athletes—whether pros chasing podiums or weekend warriors looking to optimize performance.

Expanding on the success of the original CORE sensor and its highly adopted Heat Adaptation Score, CORE 2 offers a hardware platform for continued innovation informed by athlete feedback. The result? A next-gen sensor that’s sleeker, more intuitive, and ready to tackle the toughest training sessions and races.

What's New with CORE 2?

CORE 2 isn't just a smaller sensor—it's a smarter tool for real-time thermal monitoring:

• Smarter Design: A new LED indicator provides instant updates on device status, battery life, and charging progress.
• Modular Usability: A detachable and reengineered attachment system with durable, flexible materials ensures CORE 2.0 stays secure through every mile, lap, or rep and design simplifies charging.
• Sustainable Packaging: 100% sustainable packaging. The amount of materials used to make the sensor have also been reduced.
• Future-Ready Hardware: CORE 2 is designed to support upcoming software innovations, keeping athletes ahead of the curve.
• Seamless Integration: BLE and ANT+ compatibility connect CORE 2 to iOS, Android, Garmin, Wahoo, and more so athletes can access performance data in real time.

CORE 2 is a direct response to the needs of the athletes who inspire us every day. From the pro peloton to weekend warriors, athlete feedback helped us refine a product that raises the bar for thermal load monitoring. We're thrilled to launch a tool that balances precision, comfort, and sustainability.

Ross McGraw, VP & Global Head of CORE.

Trade-Up Program for Loyal Users

To support its dedicated community, CORE is offering a Trade-Up Program to make the transition to CORE 2 even easier. Existing CORE 1 users who send in their device before June 30th, 2025 will receive 30% off their upgrade to CORE 2, ensuring no athlete gets left behind.

ABOUT CORE

CORE is a division of greenteg AG and provides expertise and technology for thermal management in sports. The CORE sensor is a real-time core body temperature monitor built with the advanced, Swiss-made Calera thermal energy transfer sensor, which provides medical-grade accuracy. It is the only wearable solution that allows athletes to continually monitor accurate core body temperature data without the need for an ingested or inserted thermometer.

Zürich-headquartered greenteg AG manufactures and supplies thermal energy transfer sensors, which are also used across a host of applications beyond sports, including medical use, photonics, thermal efficiency measurements in construction, and workplace health and safety.