






💍 Elevate your wellness game—wear the future on your finger!
The SARUNN ER Smart Ring is a sleek, silver health tracker designed for iOS and Android users, featuring continuous monitoring of heart rate, blood oxygen, blood pressure, and sleep quality. With an ultra-thin 0.1-inch display, IP68 waterproof rating up to 80 meters, and a battery life lasting up to 5 days (extendable to 30+ with the charging case), it supports multiple sports tracking without subscription fees. Its lightweight stainless steel build ensures all-day comfort, making it a discreet yet powerful companion for proactive health management.






| ASIN | B0F94B5GMG |
| Batteries | 1 A batteries required. (included) |
| Best Sellers Rank | #227,343 in Electronics ( See Top 100 in Electronics ) #652 in Smart Rings #1,772 in Activity & Fitness Trackers |
| Customer Reviews | 3.4 3.4 out of 5 stars (14) |
| Date First Available | May 19, 2025 |
| Item Weight | 3.52 ounces |
| Item model number | SF20250905B0F94B5GMG_B0F94B5GMG_1_TJ4RpA |
| Manufacturer | SARUNN ER |
| Package Dimensions | 3.62 x 3.62 x 1.26 inches |
| Standing screen display size | 0.1 Inches |
K**I
Good smart ring.
This ring works great for me! It measures my blood pressure, records my sleep pattern along with my blood oxygen saturation and heart rate. From a smart watch I had, I know I walk 3 to 5 miles a day where I work. I have not noticed step count on this ring. For the price, I find it to be a great purchase. I would love it if it showed the time of day.
M**I
P.O.S.
It took over a month for this product to be shipped. When I received it the return window closed in a week. By the time I used the product and found out that it was a piece of junk my window was already closed to return. Don't waste your money and don't waste your time on this product.
J**E
Overall okay
It works well enough. The blood pressure is way off but the rest works okay. For the price you can hardly go wrong.
L**E
No blood pressure measurement
It doesn't measure blood pressure. It has some other odd measurements. The sleep measurement is useless. It always says my sleep is great regardless of how many hours I get or how many times I wake up through the night
A**1
Good price point!
Works well, accurate data good inexpensive alternative.
K**R
Amazing
Amazing ring
J**E
Not worth it
While it worked fine thw first day or so, it did not accurately take readings, and it stopped working completely after 3 days.
A**R
Don’t waste your money
Not accurate and battery life is not good.
Trustpilot
3 weeks ago
2 weeks ago