# CORE 2
> CORE 2 is a cutting-edge non-invasive wearable sensor that provides continuous and accurate core body temperature monitoring. It helps athletes improve performance through efficient heat adaptation by tracking core temperature in real time and calculating heat strain, allowing for smarter pacing during training and races.
> *(source: ralpu.sk/en-eu/products/core-2)*

### Product Details
- **Non-invasive wearable sensor** providing continuous and accurate core body temperature monitoring
- **Advanced metric tracking** with heat strain index, heat zones, and heat adaptation scoring
- **Connection with GPS watches or bike computers** for real-time core temperature monitoring
- **Strategic cooling decisions** based on monitoring thermoregulation trends of your body
- **Better effort distribution** during training and races thanks to body temperature monitoring
- **Timely implementation of cooling strategies** such as hydration or pouring water over your head

## Key Metrics
- **Core body temperature:** Continuous measurement of internal body temperature with medical accuracy
- **Skin temperature:** Supplementary surface temperature measurement for comprehensive assessment
- **Heat strain index:** Real-time quantification of physiological processes your body uses to cool down
- **Heat zones:** 4 zones based on heat strain index, with Zone 3 being the optimal training zone
- **Heat training load:** Daily heat training load (scale 0–10) reflecting time spent in training zone
- **Heat adaptation score:** Scientifically validated algorithm calculating heat adaptation level from 0 to 100%

## Advanced Metrics Explanation
- **Heat Strain Index:** Algorithmic combination of core and skin temperatures that describes physiological cooling processes
- **Heat Zones:** Four zones where Zone 3 (training zone) triggers physiological adaptations for enhanced performance
- **Heat Training Load:** Optimal training includes 2–3 sessions per week, each 45–60 minutes in Zone 3
- **Heat Adaptation Score:** Uses validated algorithm to track body's remarkable ability to adapt to heat stress

## Cooling Strategy
- Real-time data monitoring on watch or bike computer display
- Timely implementation of cooling strategies (hydration, head pouring)
- Informed decisions about pace adjustment based on measured values
- Better effort distribution during training and races
- Control of body thermoregulation trends

## Technical Specifications

| Parameter          | Specification                                                                 |
|--------------------|------------------------------------------------------------------------------|
| Dimensions (without mount) | 41.9 × 29.4 × 7.1 mm                                                   |
| Dimensions (with mount) | 45.1 × 32.6 × 9.6 mm                                                      |
| Weight (without mount) | 8.6 g                                                                     |
| Weight (with mount) | 11.4 g                                                                       |
| Wearing method     | Non-invasive on chest (ideal) or on upper arm                               |
| Battery life       | 6 days continuous monitoring, up to 30 days in Sleep Mode                   |
| Battery type       | Rechargeable lithium-polymer battery                                         |
| Charging           | Proprietary magnetic connector, USB-C cable included                         |
| Measurement accuracy | Research-validated, average deviation: -0.01°C to 0.23°C                   |
| Connectivity       | Bluetooth Low Energy (BLE), ANT+ (2.4 GHz)                                   |
| Water resistance   | IPX7 - submersion to depth of 1.5 m                                          |

## Compatibility
- CORE 2 app for iOS and Android
- Full native compatibility with COROS watches (from January 2022 software)
- Compatibility with most Garmin, Suunto, Wahoo and Hammerhead devices
- Improving functionality with Apple Watch and WearOS
- Full compatibility with training software: Today's Plan, Intervals.icu, Golden Cheetah
- Premium version of TrainingPeaks is also compatible
- Fulgaz compatibility available

## Box Contents
- CORE 2 Heat Sensor
- CORE 2 HRM Strap Clip
- Magnetic USB-C charging cable

## Heat Training Benefits
- **↓ 5%** possible performance loss for every 1°C increase in core body temperature
- **↑ 2.5%** increase in hemoglobin mass after long-term heat training (according to research study)
- **↑ 8%** speed improvement in time trials after 10 days of heat training (according to cyclist study)
- Optimal heat training: 2-3 sessions per week, each 45-60 minutes in Zone 3
- Maximum benefits: 10-12 training sessions over 2-6 weeks
- Performance improvement even in cold conditions thanks to increased blood plasma and hemoglobin volume

## Recommendations
- **Heart rate monitor:** For most accurate data during sports activity, pairing with chest strap is strongly recommended
- **Gradual adaptation:** Most athletes notice improvement after 4-5 sessions
- **Maintaining benefits:** Benefits can be maintained with just 2-3 sessions per week during season
- **Environmental independence:** Measurements are unaffected by external environmental heat conditions

## Scientific Validation
- Research-validated measurement accuracy with extensive testing against invasive methods
- AI-based algorithm calculates core temperature with medical-grade accuracy
- Scientifically validated heat adaptation scoring algorithm
- Supporting research available at corebodytemp.com/pages/thermoregulation-research-papers

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**Version generated:** 2025-08-28 12:00 UTC