1 / 7RENPHO Lynx Smart Ring R-MZW01, Size 11, Silver
The RENPHO Lynx smart ring R-MZW01 is a silver, size 11 wearable for sleep, health, and activity tracking. The listing claims up to 7-day battery life, a subscription-free app for iOS and Android, and a charging case, though the case is not confirmed by the package details provided.
At a glance
- The listing describes sleep, blood oxygen, stress, heart rate, step, distance, and calorie tracking, plus walking and running activity tracking.
- The RENPHO Health App is claimed to work with iOS and Android without subscription fees, with syncing to Apple Health and Google Health Connect.
- The listing claims 7-day battery life and 5ATM water resistance.
Often bought together
Pros and cons
Pros
- No app subscription fee is claimed, and the listed app syncs with Apple Health and Google Health Connect.
- Tracking claims include sleep, heart rate, blood oxygen, stress, and common activity measures.
Technical specifications
13 specifications| Brand | RENPHO |
|---|---|
| Model | R-MZW01 |
| Color | Silver |
| Size | 11 |
| Weight listed | 0.04 kg |
|---|
| Tracked metrics | Monitor your sleep, blood oxygen levels, stress, heart rate, steps, distance, and calories burned. |
|---|---|
| Activities | walking and running |
| App subscription | no subscription fees required |
| Phone compatibility | both iOS and Android |
| Health app syncing | Apple Health and Google Health Connect |
| Battery life claim | 7-day battery life |
|---|---|
| Water resistance claim | 5ATM Waterproof |
| Exterior material claim | titanium exterior |
What to know before buying
- The stated 7-day battery life, 5ATM water resistance, and tracking capabilities are manufacturer/listing claims, not independently verified performance.
Listing details to confirm
Ring sizing is described as unique to RENPHO. The listing advises using the official RENPHO Sizing Kit before purchase, so verify fit rather than relying on standard jewelry sizing. The listing's charging-case claim conflicts with its explicit included-components entry of "No". Case inclusion is unconfirmed, so check the selected listing's package details.
What’s in the box
- Charging caseCheck selected pack
Check which accessories are included in your selected pack before buying.
Who is it for?
A good fit for
- Buyers seeking a ring-form tracker for sleep and everyday activity metrics without an app subscription.
- People who want an iOS or Android app with Apple Health or Google Health Connect syncing.
Less suited to
- Buyers who need confirmed charging-case inclusion or independently verified battery and water-resistance performance.
- Anyone unable to confirm fit using RENPHO's distinct sizing system before ordering.
Customer reviews on Amazon
- 5 stars
62% 62% - 4 stars
12% 12% - 3 stars
7% 7% - 2 stars
5% 5% - 1 star
14% 14%
Aggregate ratings lean positive overall, but the distribution also includes a notable share of low ratings. Without review-text evidence, the figures do not identify what customers liked or disliked. They are not proof of tracking accuracy, battery life, sizing, or app performance, so weigh them alongside the listed features and confirm the fit and package details.
Frequently asked questions
Does the listing confirm that a charging case is included?
No. The title and feature text claim a charging case, but the explicit included-components field says "No". The case's inclusion is uncertain, so check the selected listing.
How should I choose a size?
The listing says RENPHO Lynx sizing differs from standard jewelry rings and other brands, and advises using the official RENPHO Sizing Kit before purchase.
Does the app require a subscription?
The listing claims no subscription fees are required and says the app supports iOS and Android, with Apple Health and Google Health Connect syncing.
What does the ring claim to track?
The listing names sleep, blood oxygen, stress, heart rate, steps, distance, and calories, along with walking and running activity tracking.
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