R13 SIZE 10 Smart Ring: Heart rate detection
Meet the R13 SIZE 10 Smart Ring—your new high-tech sidekick that's all about keeping tabs on your health while jazzing up your daily routine. Packed with state-of-the-art sensors, it's like having a mini health lab on your finger, tracking everything from your heart rate to blood oxygen levels and even blood pressure. And yeah, it's got your back (or rather, your finger) with temperature checks and sleep tracking, because who doesn't want to decode their body's mysteries?
But wait, there's more! Snap pics from afar or dive into motion-sensing games when you're in the mood for some fun. Fancy a bit of gesture control? This ring's got you covered. Plus, with a variety of sport modes, it's ready to hustle as hard as you do. Sleek? Check. Comfy? Absolutely—with a 19.9mm diameter and 62.5mm perimeter, it's designed for all-day wear without a second thought.
And just when you thought it couldn't get any better, this little powerhouse boasts a 3-5 day battery life and can take a splash (up to 5ATM, to be exact). Whether you're team Android (6.0 or above) or iOS (11.0 or above), syncing your data is a breeze with the ECTRI app. Durable, reliable, and just plain cool—what's not to love?
- Blood oxygen test
- Blood pressure detection
- Temperature measurement
- Remote photography
- Motion-sensing game
- Gesture interaction
- Multiple sport modes
- Sleep detection
- Step count
- Heart rate detection
General specs
- Brand: R13
- Model: SIZE 10
- Seller: Sunsky
- Main Chip: OM6626A
- Bluetooth: 5.3
- Sensor chip: SC7A20H
- Heart rate sensor: HX3918
- Battery Capacity: 16mAh
- Working Time: 3-5 days
- Charging time: About 2H
- Waterproof: 5ATM
- Size: Dia 19.9mm, Perimeter 62.5mm
- Charging method: Magnetic charging
- Compatible system: Android6.0 or above, iOS11.0 or above
- APP: ECTRI
- First listed by seller: 7/23/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Video Reviews
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
R13 SIZE 10 Heart rate detection
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Smart Ring Heart rate monitor
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Smart Ring Heart rate monitoring
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Smart Ring Health Tracker with Display Screen & Touch Button
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Fitness Tracker Ring Heart rate monitoring
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Smart Ring Heart rate tracking
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| Brand | R13 | Actually lighting | Twievo | Actually lighting | ||
| Model | SIZE 10 | R09 SIZE 9 | 2025 | |||
| Color | ||||||
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| Price | $14.50 | $79.43 | $15.41 | $59.99 | $39.99 | $98.90 |
| Seller | Sunsky | Joom | Sunsky | Amazon | Amazon | Joom |
| Update | August 26, 2025 | August 23, 2025 | August 23, 2025 | June 27, 2025 | July 18, 2025 | August 23, 2025 |
| Waterproof | 5ATM | 5ATM | IP68 | 5ATM | ||
