SIMDOO Ring
3.6Best price now
Prices are checked against each store and labelled with when.
Ask our agent about this product
It checks today's price at every store, compares the alternatives and answers in about a minute.
Our take on the SIMDOO Ring
The SIMDOO Ring is a screen-free smart ring that tracks sleep, blood oxygen saturation and activity, and pairs with an iOS or Android app for call and message notifications. It is made of stainless steel, weighs about 5 grams, carries an IP68 water-resistance rating and runs up to 5 days per charge, with a magnetic cable and a portable charging case included. It sells for $36.98 at Walmart as of November 5, 2026, the only new price listed, so there is no recent range to compare against. That is far below the $200 to $300 typical of name-brand smart rings, but its 3.6-out-of-5 rating from 14 ratings is middling.
- Low price compared with mainstream smart rings
- No subscription for core features
- Up to 5 days of battery life and a 30-minute magnetic charge
- IP68 water resistance and about 5 grams on the finger
- Charging case included for power on the go
- Call and message notifications through the app
- Only 14 ratings, averaging 3.6 out of 5
- Sizing must be checked before ordering; a wrong size hurts accuracy
- No display, so all data lives in the phone app
- Fitness tracking is basic next to a watch or a premium ring
- Brand is little known, so long-term support is uncertain
SIMDOO Ring prices at every store
- WalmartNew
In stockSold by Ion LaneReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$36.98Free shippingVerified
Also available at
- WalmartCheck price at Walmart
SIMDOO Ring price history
Lowest price we've seen: $43.99 on Nov 5 at Walmart. Tracked across 1 store since Nov 5.
What reviewers say
Reception is mixed, based on a small sample of 14 ratings averaging 3.6 out of 5. Buyers tend to like the low price and the no-subscription model, while complaints center on fit and sensor accuracy.
- Low cost for a smart ring
- No recurring fee
- Comfortable, lightweight fit
- Battery lasts several days
- Sleep and oxygen readings can be inconsistent
- Fit and sizing issues
- App is basic
About the SIMDOO Ring
Meet the SIMDOO Smart Wearable Ring: Your 24/7 Companion for Wellness Insights. Designed for continuous comfort, this sleek wearable ring helps you understand your body's daily patterns—like activity and sleep—with a discreet, screen-free design. Intelligent Design for Everyday Life Experience effortless awareness. Advanced sensors smoothly collect data to identify trends in your activity, sleep, and recovery. Crafted from durable stainless steel with an IP68 rating, it's lightweight (～5.0g), waterproof, and built for all-day wear. Long-Lasting Power & Seamless Connectivity Enjoy up to 5 days of battery life and rapid 30-minute charging via the magnetic cable. The included portable charging case offers power on the go. Stay connected with call/message notifications through the free app (iOS/Android, 20+ languages). Simple & Subscription-Free Get all core features with a one-time purchase—no hidden fees. For the best fit and accurate data, please check our sizing guide before ordering. In the Box: 1x HIVISUALS Ring, 1x Charging Case, 1x Magnetic Cable, 1x Manual.
Specifications
Questions and answers
- Is the SIMDOO Ring worth it?
- At $36.98 at Walmart as of November 5, 2026, it is a cheap way to try sleep and blood oxygen tracking without a subscription. Expect basic data and some accuracy variance; it is not a substitute for a premium ring or a watch.
- How does it compare with an Oura Ring?
- It costs a fraction of the price and needs no subscription, but Oura rings cost several hundred dollars and are known for more polished sleep and readiness tracking. The SIMDOO has far fewer ratings and a 3.6 average, so treat it as an entry-level option.
- How long does the battery last and how do you charge it?
- The battery is rated for up to 5 days. It charges in about 30 minutes with the included magnetic cable, and the included charging case lets you top it up away from an outlet.
- Is it waterproof?
- Yes. It has an IP68 rating, so it can handle hand washing and everyday water exposure. Avoid hot water and deep diving.
- Which phones does it work with?
- It pairs with iOS and Android phones through the free app, which supports more than 20 languages. The listing lists iOS as the supported OS, so confirm Android support in the app store before buying.
- What is in the box?
- One SIMDOO ring, one charging case, one magnetic charging cable and a manual. Check the sizing guide before ordering; the listed size is 12 in black.
- Where is the SIMDOO Ring cheapest?
- At Walmart, for $36.98, as of our latest check.
- What do buyers say about the SIMDOO Ring?
- Rated 3.6 out of 5 from 14 ratings.
