REWSX Smart Ring, Silver, US Size 6

Silver Size: The REWSX smart ring is a screen-free fitness tracker for sleep, activity, heart rate, and blood oxygen monitoring through a smartphone app. It includes a charging case and cables according to the listing, while its stated ring battery life is 3–5 days per charge.

At a glance

Tracks sleep stages and activity through the companion app, with daily, weekly, and monthly views described in the listing.
The listing claims heart rate and blood oxygen monitoring, plus multiple sports modes and workout route data when a mode is active.
The maker says the app is available without subscription fees.
A charging case is listed, and the ring is claimed to run for 3–5 days per charge.

Price

$42.61Save 29%

Reference price: ~~$59.98~~

Price checked: Nov 12, 2026

View offer Ahead of Black FridayExplore the selection

Pros and cons

Pros

Screen-free ring form factor offers a less conspicuous alternative to a wrist-worn tracker.
The listed sleep, health, and activity tracking covers both overnight and everyday use.
A charging case is listed in the package contents, and the manufacturer claims no app subscription fee.

Cons

No on-ring display is listed, so information is viewed through a compatible smartphone.
The stated ring battery life of 3–5 days means regular recharging is part of use.

Technical specifications

22 specifications

Identity
Brand	REWSX
Model	smart ring
Color	Silver
Size shown	6#

Monitoring and use
Screen	No Display
Listed features	Activity Tracker, Lightweight, Multisport Tracker, Sleep Monitor, Slim Design

Connectivity and compatibility
Wireless connection	Bluetooth
Compatible devices	Smartphone
Compatible phone systems	Android Devices, iOS Devices
GPS	GPS Via Smartphone

Power and battery
Battery type	Lithium Ion
Ring battery life	3-5 days
Charging time	2 hrs
Charging case capacity	400 mah
Claimed ring charges from case	about 15 times

Form and protection
Form factor	Round
Water resistance	Waterproof
Water resistance depth	50 meters
Waterproof rating	IP68

Other listed details
Operating system	Android Wear 2.9
Warranty type	Lifetime
Warranty description	2 years warranty

What to know before buying

Listing details to confirm

The listing gives conflicting warranty details: one field says lifetime while another specifies a 2 years warranty. Water protection is also described as both IP68 and waterproof to 50 meters. The 3–5-day ring runtime and roughly 15 case charges are manufacturer claims, not independently established. Confirm the warranty terms, protection rating, size chart, and app compatibility for the selected listing before purchase. Ring sizing guidance says circumference measurement may run large and suggests choosing one size down, while buyers who know their US ring size are told to order that size.

What’s in the box

Smart ringIncluded
Charge cableIncluded
Charge caseIncluded
User manualIncluded
Magnetic USB charging cableCheck selected pack
Type-C case charging cableCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

People seeking a compact tracker for sleep and everyday activity who are comfortable reviewing data in a phone app.
Android or iOS phone users looking for a ring tracker with no stated recurring app fee.
Buyers who prefer a charging case to carry additional ring charges.

Less suited to

Anyone who wants a screen on the wearable itself.
Buyers who require independently verified medical measurements or a clearly established water-protection and warranty specification.

REWSX Smart Ring, Silver, US Size 6 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 64 ratings

5 stars80%80%
4 stars10%10%
3 stars4%4%
2 stars6%6%
1 star0%0%

Customer feedback reports positive impressions of the ring’s appearance, comfort, sleep and heart-rate tracking, functionality, and battery life. This aligns with the listing’s emphasis on sleep and health monitoring and its claimed 3–5-day ring runtime, but those feature claims are not proof of measurement accuracy or battery performance. Ratings are mostly five-star, though some lower ratings are present, so experiences are not uniformly positive.

Positive themes

Customers report liking the design and comfort.
Customers describe sleep and heart-rate tracking positively.
Customers appreciate the functionality and battery life.

Frequently asked questions

Does this smart ring require a subscription?

The listing claims lifetime free access to its health app with no subscription fee.

How long does the ring run between charges?

The manufacturer claims 3–5 days after a 2-hour charge. Actual battery life is not independently verified here.

What comes in the package?

The listed contents include the ring, a charge cable, a charge case, and a user manual. A feature description further specifies a 400mah case, a magnetic USB ring cable, and a Type-C case cable.

What size is this listing?

The selected option is shown as Silver, 6#. The listing says it follows US ring sizes and provides sizing guidance, so use the size chart for the selected option.