QALO SR-2 Smart Ring Fitness Tracker
- 2.2mm thin, titanium alloy, 4 g
- Waterproof up to 100 meters
- No subscription, free QALO app
- Sleep stages and daily Sleep Score
- Heart rate, HRV, SpO2, stress, temperature trends
- Up to 7 days battery, 2 hours to charge
- Wireless charging case included
- Sizing up recommended
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A thin, subscription-free smart ring for tracking sleep, recovery and activity on iOS or Android. It fits snug because of raised sensors, so sizing up before ordering matters.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0FNPPHSL5Model: SR-2Category: Smart Rings
Colors Available
Styles Available
Sizes Available
Need a different one? Pick on Amazon →
Overview
Not a watch or band, this QALO ring tracks sleep, heart rate, HRV, blood oxygen and activity from your finger, with no screen and no monthly fee. A thin titanium shell lets it stay on through workouts, showers and sleep.
Subscription-free sleep and recovery tracking in a ring light enough to forget about is the core of its value. Raised inner sensors make it fit tight, so getting the size right takes care.
Who it's for
People who dislike sleeping in a watch and want nightly recovery data will wear it around the clock. Runners who need built-in GPS or live stats on screen need a watch.
Pros and cons
- Very thin and light
- Detailed sleep stage tracking
- Women's health cycle tracking
- Works with iOS and Android
- Runs small, size up
- Snug fit from raised sensors
Performance notes
Accuracy depends on fit: the raised sensors need firm skin contact, which is why it fits snug and sizing up is advised. Sleep stages and HRV come from overnight readings, so wearing it every night builds the trend data. Battery life covers about a week, with a short charge in the case.
Specifications
| Brand | QALO |
|---|---|
| Model | SR-2 |
| Dimensions & fit | |
| Band width | 8 millimeters |
| Item weight | 4 g |
| Power & efficiency | |
| Battery Average Life | 7 days |
| Battery Charge Time | 2 hours |
| Construction & materials | |
| Band Material Type | Titanium alloy |
| Compatibility & installation | |
| Connectivity Technology | Bluetooth |
| Compatible Phone Models | iOS and Android |
| Warranty & support | |
| Warranty Description | 12 Months Limited |
| Other details | |
| Metrics Measured | Sleep stages, Sleep Score, heart rate, HRV, SpO2, stress, temperature trends, steps, active calories, distance |
| Water Resistance Level | Waterproof up to 100 meters |
| Gps Geotagging Functionality | No GPS |
| Display Type | No display |
| Wearable Computer Type | Smart ring |
| Thickness | 2.2mm |
| Builtin Media | Smart ring, wireless charging case, charging cable, covers |
Frequently asked questions
What comes in the box with the QALO SR-2 smart ring?
The smart ring, a wireless charging case, a charging cable and covers.
What size QALO SR-2 should I order?
QALO recommends sizing up because the raised sensors make it fit snug. Consider knuckle width and finger swelling, and use the QALO Ring Sizing Kit.
Does the QALO SR-2 need a subscription?
No. Everything is tracked in the free QALO app.
Can I swim with the QALO SR-2?
Yes. It is waterproof up to 100 meters and built for workouts and showers.