What is the best wearable device for health?

There isn’t a single “best” wearable for everyone — it depends a lot on what health features are most important to you, your budget, and what platform (iPhone / Android) you use. I can walk you through key factors to consider + some top current picks. If you tell me your priorities (e.g. heart monitoring, sleep, battery, price, Android vs iPhone, etc.), I can narrow it further for you.

What to look for

Here are the features that tend to matter most, and trade-offs:

Feature	Why it’s useful	Common trade-offs
Heart rate / ECG / SpO₂ / resting HR variability (HRV)	For tracking cardiovascular fitness, detecting irregularities, monitoring how your body recovers	More advanced sensors raise cost and may need more frequent charging
Sleep tracking / sleep quality / recovery	Helps understand rest, stress, readiness etc.	Accuracy varies, often better in premium devices
GPS / built-in GPS	For tracking runs, outdoor workouts without carrying phone	Drains battery faster; increases price
Battery life	Want something you don’t need to charge every day	More features, display brightness reduce battery; small form factors have less room for big battery
Comfort / form factor	If it’s uncomfortable, you’ll stop wearing it, defeating purpose	Smaller wearables may miss some sensors; rings vs watches trade-off screen & interaction vs comfort
Platform compatibility (iOS vs Android)	To sync data, use the app ecosystem, alerts etc.	Some features restricted depending on OS; better integration on native platforms
Durability / water resistance	If you sweat, swim, wear it to bed etc.	Adds cost; rugged designs may be bulkier or heavier

Here are some specifics:

Samsung Galaxy Fit3 — good budget fitness band, tracks basic metrics, fairly comfortable, long battery.
Redmi Watch 5 Active — makes a decent entry into smartwatch territory: bigger display, more features.
Samsung Galaxy Ring — if you want something more subtle than a watch; premium build.
boAt Smart Ring Active Plus Health Monitor & boAt Active Smart Ring — rings are discreet, good for sleep & rest tracking; lesser features than full watches.
Fire‑Boltt 4G Pro Smart Watch — low cost, more basic; good for those with tight budgets who still want smartwatch features.

If I were you, balancing cost, usefulness, and features, I might go with something like the Fitbit Charge 6 or Garmin Venu 3/4 (if you can stretch a bit), unless you really prefer subtlety (then Oura Ring). For basic everyday health tracking and long battery, one of those strikes a good balance.