R09 SIZE 9 Smart Ring: Heart rate monitoring
Meet the Smart Ring – your new wrist-free buddy that's all about keeping you in the loop on your health and fitness, without the bulk. Packed with a Realtek chipset and Bluetooth 5.2, it's like having a mini superhero on your finger, ensuring your data zips around faster than you can say 'Where's my phone?'
Thanks to the ST LIS2DOCTR sensor chip, it's got your back (or rather, your finger) with spot-on tracking of your heart rate, how much oxygen you're rocking in your blood, and even how well you're catching those Z's. And with a 14mAh battery, it's the marathon runner of wearables – lasting 5-7 days on a single charge, or 15 days if you're just showing off. Plus, it juices up in 1.5 hours with its magnetic charging, because who's got time to wait? Oh, and it's 5ATM waterproof, so go ahead, take it for a swim – it won't bail on you.
Whether you're team Android 5.1+ or iOS 8.0+, this ring plays nice with both, and with the QRing app, it speaks your language (literally). Inside the box, you'll find the smart ring, a charging cable (obviously), a user manual (for those who read them), and the original retail box (because first impressions count).
- Blood oxygen monitoring
- Sleep tracking
- Multiple sports modes
- Bluetooth 5.2
- 5ATM waterproof
- Heart rate monitoring
General specs
- Model: R09 SIZE 9
- Seller: Sunsky
- Chipset: Realtek
- Bluetooth: 5.2
- Sensor chip: ST LIS2DOCTR
- Battery Capacity: 14mAh
- Battery life: 5-7 days of use, 15 days of standby
- Charging time: About 1.5H
- Waterproof: 5ATM
- Size: Dia 19.1mm, Circumference 60mm
- Charging method: Magnetic charging
- Compatible system: Android5.1 or above, iOS8.0 or above
- APP: QRing
- APP support language: Danish, Ukrainian, Russian, Croatian, Hungarian, Hindi, Indonesian, Türkiye, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Thai, Estonian, Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, English Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean, Malay
- First listed by seller: 5/20/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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Smart Ring Heart rate monitoring
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| Brand | SACOSDING Smart Watch | Actually lighting | Twievo | MEINING HEALTH CONSULTING LLC | SRZNJZ | |
| Model | R09 SIZE 9 | |||||
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| Price | $15.41 | $47.63 | $98.90 | $39.99 | $39.99 | $23.99 |
| Seller | Sunsky | Joom | Joom | Amazon | Amazon | Amazon |
| Update | August 23, 2025 | August 16, 2025 | August 23, 2025 | July 18, 2025 | June 27, 2025 | June 27, 2025 |
Smart Ring
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