Core 2 body temperature sensor gets smaller and smarter
Core’s second-generation body temperature sensor, the Core 2, is set to launch in late March 2025, bringing a smaller, lighter, and more user-friendly design to the market. While it doesn’t reinvent the wheel, it makes smart updates to an already useful tool for those managing heat during training and competition.
Lighter and smaller
If you’ve used the original Core sensor, you’ll notice the changes in the Core 2 right away. It’s almost half the size and significantly lighter, meaning it’s less noticeable during long runs, rides, or races. To be exact, its 48% smaller and 30% lighter than the original. The attachment system has also been revamped to stay put when you’re on the move and make charging easier.
One nice touch is the addition of an LED indicator. It lets you quickly check the battery or device status without fiddling with your phone or training watch. Another practical improvement you might not notice at first but will definitely appreciate in daily use.
Still focused on real-time heat training
Like its predecessor Core 2 keeps its focus on real-time body temperature monitoring. Useful if you are consistently training in hot conditions. The little gadget works with popular platforms like Garmin and Wahoo, via Bluetooth and ANT+, ensuring that data is accessible and actionable during workouts.. This means you can see your stats without juggling extra apps or devices.
Although the Core 2’s functionality is pretty similar to the original at launch, the hardware is built to handle future software updates. These planned upgrades, set to roll out later in 2025, could bring new features to keep the sensor relevant for years to come.
Making it easy for existing users
At CHF 269.95—the same price as the original—Core 2 will be available worldwide starting in March 2025. For existing Core 1 users, the company has introduced a trade-up program. By sending in their old sensors, theycan receive credit toward the Core 2. Additionally, the company is offering a discount on Core 1 units while supplies last, giving new users a chance to explore the platform before committing to the next-gen model.
Essential reading: Top fitness trackers and health gadgets
The Core 2 doesn’t try to do everything—it’s focused on athletes who need accurate heat data to optimise their training. If you’re someone who competes in endurance sports or trains in tough weather, it might be worth a look.
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