R4 Smart Ring with Display – IP68 Health Tracker

Meet the R4 Smart Ring — Your Health Screen, On Your Finger

The R4 puts a full health dashboard on your finger. With its built-in display, you can check your metrics at a glance — no phone needed. Worn 24/7, it tracks the signals that matter and turns them into clear, actionable insight for your everyday health.

Health Tracking That Never Stops

Heart rate & blood oxygen (SpO2) — continuous monitoring, day and night.
Sleep & stress tracking — understand your rest quality and daily stress patterns.
On-ring display — view time and key health metrics directly on the ring.
Gesture control — intuitive gestures for quick actions without reaching for your phone.

Built for Real Life

IP68 waterproof — shower, swim and train without taking it off.
Up to 16-day standby — charge less, wear more.
Featherweight comfort — designed for round-the-clock wear.

SY01 Specifications

Model	R4
Display	Built-in on-ring display
Health tracking	Heart rate · Blood oxygen (SpO2) · Sleep · Stress
Control	Gesture control
Waterproof	IP68
Standby	Up to 16 days
App	Companion app (iOS & Android) — name to confirm

Meprian smart rings combine precise engineering with everyday wearability. The R4 is your quiet, always-on health companion — explore the full Meprian smart ring collection to find your fit.

FAQ

Quick answers before you order.

How fast will my order ship?

Orders dispatch within 2-3 business days. Support average response time is under 24 hours.

Is there a warranty?

Yes, every product is covered by a 12-month limited warranty.

What is the return policy?

You have 30 days for hassle-free returns on qualifying items.

Do you ship to my country?

We offer free shipping to 60+ countries worldwide. Shipping is calculated at checkout for your region.

Where do you ship from?

All orders ship from our fulfillment center in Shenzhen, China via international express, with worldwide delivery and tracking.

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R4 Smart Ring with Display – IP68 Health Tracker | Meprian