Heart rate (continuous)Blood oxygen saturation (SpO2)Sleep stages (light, deep, REM)Steps takenCalories burned

REVA Ring and REVAX Ring offer up to 7 days of battery life on a single charge under normal usage. Sleep tracking and frequent SpO2 checks may reduce usage time slightly.

We offer multiple sizes (6–13 US ring sizes) to ensure a comfortable, secure fit. We recommend using our online sizing guide on the product page before ordering.

Yes. All personal and health data is encrypted both on the device and during transmission to the app. We do not sell your data to third parties.

We recommend wearing it on your index or middle finger for optimal sensor accuracy. Avoid wearing it on your thumb or pinky, as blood flow and movement may affect readings.

We know you’re excited to start using your new smart ring, so we’ve made the delivery process as transparent as possible.

Estimated arrival
Shipping: Your order is expected to arrive in March as we are a new smart ring company so we require more time for our first batch of orders.

After you click “Buy”

Order Confirmation: An email (or SMS, if you opted‑in) confirming your purchase, the items you ordered, and the estimated delivery month (March).

Immediately after checkout: Processing & Packing A second email letting you know we’re preparing your smart ring for shipment.
Shipment Notification: A shipping confirmation with a tracking link so you can watch your package travel to your door.

As soon as the carrier picks it up
Out for Delivery: A final update (email/SMS) telling you the exact day the carrier expects to deliver. The day before delivery
How you can stay in the loop
Tracking dashboard: Log in to your account on our website and view real‑time status updates for every order.

Customer support: Need more details? Our support team is available 24/7 via chat or email—just reference your order number.
If you don’t see a tracking link within 48 hours of the “Shipment Notification” email, please check your spam folder or reach out to us. We’ll sort it out right away.

Your smart ring is slated to land in your hands sometime in March, and you’ll get clear, automatic updates at every step of the journey—from purchase to delivery. If anything changes, we’ll let you know right away.