HeatSense integrates with multiple sensors, and each has a different level of water resistance. Here’s what you need to know:
HeatSense Thermal Sensor
- Waterproof rating: The HeatSense device is waterproof and can be submerged up to 1.5 meters.
- Accuracy note: Core temperature accuracy is not guaranteed underwater.
- Care after water use:
- Rinse with clean water and mild soap after activity.
- Disinfect with 70–75% alcohol if needed.
- Do not use acetone or 100% alcohol—these can damage the medical-grade plastic.
- Design advantage: The magnetic charging cable keeps the device closed/sealed during use.
Polar H10 Chest Strap
- Waterproof rating: Fully waterproof; designed for swimming and water sports.
- Data transmission: Tracks heart rate underwater using 5 kHz transmission, or stores data for later syncing with a compatible device or the Polar Beat app.
COROS Bicep Strap
- Water resistance: Rated to 3 ATM; suitable for wet weather conditions.
- Important limitation: Not designed for swimming or water sports; does not store data for post-swim syncing.
- Care after wet use: Allow the strap to fully air dry before next use to reduce risk of skin irritation.
Quick Summary
- HeatSense Thermal Sensor: Waterproof to 1.5 m; underwater accuracy not guaranteed.
- Polar H10: Fully waterproof and swim-ready; can transmit or store heart rate data.
- COROS Bicep Strap: Water resistant for rain/sweat; not for swimming.
