Here are wearables that use ExG sensors (e.g., ECG, EEG, EMG) to monitor electrical activity in the body for health, fitness, and research applications:

1. Apple Watch Series 9
   The Apple Watch Series 9 features an ECG sensor that monitors heart rhythms and can detect irregularities like atrial fibrillation. It offers on-demand heart health assessments via the Health app, providing real-time feedback.

2. Fitbit Sense 2
   Equipped with an advanced ECG sensor, Fitbit Sense 2 allows users to track heart rhythm and detect potential irregularities. It also integrates with stress management tools for holistic wellness monitoring.

3. Withings ScanWatch
   This hybrid smartwatch uses an ECG sensor to measure heart activity and alert users to abnormalities such as atrial fibrillation. Its classic design combines advanced health monitoring with everyday wearability.

4. Muse 2 Headband
   Muse 2 uses EEG sensors to track brain activity and provide feedback for improving meditation focus. It also monitors breathing, heart rate, and body movements for a complete mindfulness experience.

5. Emotiv EPOC+
   The Emotiv EPOC+ is a multi-channel EEG headset that measures brain activity for research and cognitive performance tracking. It’s widely used in neuroscience, gaming, and brain-computer interface experiments.

6. NeuroSky MindWave Mobile 2
   This lightweight EEG wearable tracks brainwaves to measure attention and relaxation levels. It’s ideal for personal wellness, educational tools, and cognitive training applications.

7. OpenBCI Ultracortex Mark IV
   A research-grade EEG headset, the OpenBCI Ultracortex Mark IV monitors brain activity for neuroscience experiments and BCI development. It is customizable and supports various research and experimental setups.

8. KardiaMobile 6L by AliveCor
   KardiaMobile 6L offers a portable six-lead ECG solution for accurate heart health tracking. It pairs with smartphones to provide users with detailed heart rhythm analyses anytime, anywhere.

9. Myontec MBody Smart Shorts
   Myontec MBody integrates EMG sensors into athletic shorts to monitor muscle activity during workouts. It helps athletes optimize performance and avoid injuries through precise biofeedback.

10. Biostrap EVO
    The Biostrap EVO includes ECG functionality to analyze heart rate variability (HRV) and recovery patterns. It’s designed for athletes and health-conscious individuals seeking advanced fitness insights.

11. Hexoskin Smart Shirt
    Hexoskin integrates ECG sensors into its biometric shirts, allowing users to monitor heart activity alongside breathing and movement. It’s used in fitness, research, and even space exploration.

12. Empatica Embrace2
    Embrace2 uses ECG sensors to detect seizures and alert caregivers in real time. It’s designed for epilepsy patients and also tracks other physiological signals for safety and wellness.

13. Zio Patch by iRhythm
    Zio Patch is a wearable ECG device that continuously tracks heart rhythms for up to two weeks. It’s widely used in medical settings to diagnose arrhythmias and other cardiac conditions.

14. NeuroPace RNS System
    The NeuroPace RNS System is an implantable EEG-based device that detects and responds to abnormal brain activity. It’s specifically designed to help epilepsy patients manage seizures.

15. Smart Breathe T-Shirt
    The Smart Breathe T-Shirt uses EMG sensors to measure respiratory muscle activity and provide feedback on breathing patterns. It’s useful for improving posture, respiratory health, and overall well-being.

These wearables demonstrate the versatility of ExG sensors in tracking brain, heart, and muscle activity for fitness, wellness, and medical applications.