QALO - Slim, No-Subscription Smart Ring Health, Fitness, Sleep & Women’s Health Tracker - Size Before You Buy - Size 9 - Gold - (2026)
About this product
Meet the QALO Slim Smart Ring, our second-generation smart ring and a slimmer, featherlight way to track your health, fitness, sleep and recovery, with no subscription required. Sizing is important: the QALO Slim Smart Ring uses a unique sizing system that differs from standard jewelry rings and other smart rings, so please use the QALO sizing chart in the product images before you buy. If you are between sizes, size up to account for natural finger swelling and knuckle width. At just 2.2mm, it is thinner than our original Smart Ring and built to disappear on your finger, with up to 5 days of battery on a single charge. Upgraded sensors track heart rate, heart rate variability (HRV), blood oxygen (SpO2), stress, skin temperature, sleep stages, steps, calories, distance and workouts, while women’s health tracking provides insights across every cycle phase. Everything comes together in the free, secure QALO app for iOS and Android, because better health shouldn’t be a luxury. In the box: QALO Slim Smart Ring, charging case, USB-C charging cord, plus black and white silicone ring covers that add comfort, help protect the ring from everyday scratches and let you switch up your look.
Color
GoldRing Size
9Features
25% THINNER, BUILT FOR 24/7 WEAR
At just 2.2mm, the QALO SR-2 is 25% thinner than the original SR-1 and built to disappear on your finger. Featherlight and durable, it’s designed to go with you through workouts, showers and sleep without compromise.
SIZING IS IMPORTANT
QALO SR-2 uses a unique sizing system that differs from standard jewelry rings and other smart rings. Its raised sensors sit close to your skin for accurate readings, so it fits more snug. Use the QALO sizing chart in the product images before you order, and if you are between sizes, size up to account for natural finger swelling and knuckle width.
NO SUBSCRIPTION - HSA/FSA ELIGIBLE
Better health shouldn’t be a luxury. That’s why every QALO SR-2 feature, from sleep and vitals to women’s health, is included in the free QALO app for iOS and Android with no subscription and no monthly fees. Buy the ring once and get full access to your insights. The SR-2 is also eligible for purchase with HSA or FSA funds, making better health even more accessible.
HEALTH, SLEEP & ACTIVITY TRACKING
Monitor heart rate, HRV, SpO2, stress and skin temperature, plus steps, calories, distance and automatic activity detection. Track awake, light, deep and REM sleep with a daily Sleep Score, and see it all come together in Q Score, your simple daily snapshot of sleep, movement and vitality.
WOMEN’S HEALTH TRACKING
Designed with women’s health in mind. Skin temperature and heart rate trends power period and fertile-window predictions, with phase-based insights across all four cycle phases, plus symptom logging and a daily journal. All included, no subscription.
Specifications
- Touch ScreenNoOperating System CompatibilityApple iOS, AndroidApp CompatibleYesBuilt-in Storage0 gigabytesMetrics MeasuredActivity vs. inactivity, Calories burned, Distance swam, Distance traveled, Duration of exercise, Duration of sleep stages, Hours slept, Resting heart rate, Skin temperature, Steps taken, Target heart rate, Blood oxygenProtective QualitiesWater resistant
Reviews
Rating 4.7 out of 5 stars with 16 reviews
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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Meet the QALO Slim Smart Ring, our second-generation smart ring and a slimmer, featherlight way to track your health, fitness, sleep and recovery, with no subscription required. Sizing is important: the QALO Slim Smart Ring uses a unique sizing system that differs from standard jewelry rings and other smart rings, so please use the QALO sizing chart in the product images before you buy. If you are between sizes, size up to account for natural finger swelling and knuckle width. At just 2.2mm, it is thinner than our original Smart Ring and built to disappear on your finger, with up to 5 days of battery on a single charge. Upgraded sensors track heart rate, heart rate variability (HRV), blood oxygen (SpO2), stress, skin temperature, sleep stages, steps, calories, distance and workouts, while women’s health tracking provides insights across every cycle phase. Everything comes together in the free, secure QALO app for iOS and Android, because better health shouldn’t be a luxury. In the box: QALO Slim Smart Ring, charging case, USB-C charging cord, plus black and white silicone ring covers that add comfort, help protect the ring from everyday scratches and let you switch up your look.
Introducing the world’s smallest smart ring—Oura Ring 5, built with even more sensing power than previous generations. 40% smaller and ultra lightweight, Oura Ring 5 fits seamlessly in with your life and your style. The updated all-titanium design is more scratch-resistant and comfortable than ever, Oura Ring 5 delivers 50+ health metrics with research-grade accuracy. With 6-9 days of battery life you can even forget it’s on. No more compromises when it comes to tracking your health. IMPORTANT: Size yourself with the Oura Ring 5 Sizing Kit before you buy — Oura Rings are not US standard sizing and other Oura Ring generations, and finding the right size will result in the best experience possible. With an Oura Ring 5 Sizing Kit purchase, you will receive a $10 Best Buy gift card to use towards your Oura Ring 5 purchase.
Meet the QALO Slim Smart Ring, our second-generation smart ring and a slimmer, featherlight way to track your health, fitness, sleep and recovery, with no subscription required. Sizing is important: the QALO Slim Smart Ring uses a unique sizing system that differs from standard jewelry rings and other smart rings, so please use the QALO sizing chart in the product images before you buy. If you are between sizes, size up to account for natural finger swelling and knuckle width. At just 2.2mm, it is thinner than our original Smart Ring and built to disappear on your finger, with up to 5 days of battery on a single charge. Upgraded sensors track heart rate, heart rate variability (HRV), blood oxygen (SpO2), stress, skin temperature, sleep stages, steps, calories, distance and workouts, while women’s health tracking provides insights across every cycle phase. Everything comes together in the free, secure QALO app for iOS and Android, because better health shouldn’t be a luxury. In the box: QALO Slim Smart Ring, charging case, USB-C charging cord, plus black and white silicone ring covers that add comfort, help protect the ring from everyday scratches and let you switch up your look.
Meet the QALO Slim Smart Ring, our second-generation smart ring and a slimmer, featherlight way to track your health, fitness, sleep and recovery, with no subscription required. Sizing is important: the QALO Slim Smart Ring uses a unique sizing system that differs from standard jewelry rings and other smart rings, so please use the QALO sizing chart in the product images before you buy. If you are between sizes, size up to account for natural finger swelling and knuckle width. At just 2.2mm, it is thinner than our original Smart Ring and built to disappear on your finger, with up to 5 days of battery on a single charge. Upgraded sensors track heart rate, heart rate variability (HRV), blood oxygen (SpO2), stress, skin temperature, sleep stages, steps, calories, distance and workouts, while women’s health tracking provides insights across every cycle phase. Everything comes together in the free, secure QALO app for iOS and Android, because better health shouldn’t be a luxury. In the box: QALO Slim Smart Ring, charging case, USB-C charging cord, plus black and white silicone ring covers that add comfort, help protect the ring from everyday scratches and let you switch up your look.
| Pros for QALO - Slim, No-Subscription Smart Ring Health, Fitness, Sleep & Women’s Health Tracker - Size Before You Buy - Size 9 - Gold - (2026) | |||
|---|---|---|---|
| There were no pros for this product— | Design, Battery Life, Overall Performance, Comfort, Health Tracking | There were no pros for this product— | There were no pros for this product— |
| Cons for QALO - Slim, No-Subscription Smart Ring Health, Fitness, Sleep & Women’s Health Tracker - Size Before You Buy - Size 9 - Gold - (2026) | |||
| There were no cons for this product— | Connectivity | There were no cons for this product— | There were no cons for this product— |
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