CORE 2 is a non-invasive wearable sensor designed to continuously monitor core body temperature in real-world training and racing conditions.

The sensor uses advanced thermal energy transfer technology and an AI-powered algorithm to estimate core body temperature with a high level of accuracy, without the need for ingestible sensors or other invasive methods.

Compatible with Garmin, Wahoo and other ANT+ or Bluetooth devices, CORE 2 integrates seamlessly into an existing training setup. Athletes can monitor core temperature live during exercise, evaluate heat strain, and follow heat adaptation over time through the CORE app.

Whether preparing for competition in hot conditions, performing structured heat training, or optimizing pacing strategies on race day, CORE 2 provides actionable thermal data to support more informed training decisions.

Key benefits of CORE 2

• Continuous core body temperature monitoring
• Non-invasive wearable technology
• Real-time heat strain and thermal load tracking
• Supports heat training and heat adaptation strategies
• Compatible with Garmin, Wahoo and other ANT+/Bluetooth devices
• AI-powered temperature estimation
• Research-backed accuracy
• 48% smaller and 30% lighter than the previous generation
• Up to 6 days of battery life
• IPX7 water resistance

How to use CORE 2?

Attach the CORE 2 sensor to the dedicated heart rate monitor strap clip and wear it on your chest during training or racing.

Pair the sensor with a compatible Garmin, Wahoo or other ANT+/Bluetooth device to view your core body temperature in real time. CORE 2 can also be connected to the CORE app to analyse heat strain, thermal load and heat adaptation over time.

CORE 2 can be used during everyday training, structured heat training protocols and competitions in hot environments.

For the most consistent data, wear the sensor directly against the skin and ensure it remains properly positioned throughout the session.

Compatibility

CORE 2 is designed to be used with a compatible heart rate monitor strap. For the best user experience, we recommend a heart rate monitor that supports both Bluetooth and ANT+ connectivity.

Recommended use cases of CORE 2

• Training and racing in hot conditions
• Heat acclimation and heat adaptation protocols
• Monitoring thermal strain during long endurance sessions
• Optimising pacing strategies in warm environments
• Tracking the physiological impact of heat on performance and recovery