Ratings vary between models. Some are labeled IP68 or 3‑ATM but explicitly note protection is limited to splashes and rain (not suitable for swimming or showering), another lists resistance to 50 meters, and several simply use the term “Water-Resistant.” In short: ratings differ by model — check the product details to confirm whether a tracker is safe for swimming, showering, or only for splash/rain protection.
These trackers record common health and activity metrics such as heart rate, blood oxygen (SpO2), steps, calories burned, active minutes, daily distance, sleep metrics, VO2 Max, and stress level. Some models also list ECG/heart rhythm monitoring and menstrual-cycle tracking where supported.
Several trackers provide sleep tracking that differentiates stages (awake, light, deep) and report a Sleep Score or daily sleep summary. Some models include stress-monitoring features with daily stress scores and related mindfulness or reflection tools.
Some devices require paid subscriptions for certain features. Common examples include paid “Premium” health features and music streaming or advanced music controls. These subscriptions are sold separately and may also require an online account and internet access.
Mode coverage varies by model, with listings showing anywhere from 25+ to 40+ exercise modes. Activities mentioned across the set include running, hiking, cycling, swimming, tennis, golf, pilates, yoga, rowing, mountain biking, elliptical training, martial arts and walking.