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**Q: How does the Zentra Ring track my health?**
The Zentra Ring tracks your heart rate, sleep cycles, steps, and more using smart sensors. It syncs via Bluetooth to a companion app.

**Q: Is there an app?**
Yes! Zentra connects to both iOS and Android apps for real-time tracking and insights.

**Q: How long does shipping take?**
Shipping typically takes 7–12 business days. You'll receive tracking once your ring ships.

**Q: Do I need to charge it often?**
No — Zentra lasts up to 10 days on a single charge.

**Q: What sizes are available?**
We offer US ring sizes 7–12.