PAERDUO: Heart Rate & Blood Oxygen Monitoring
Meet your new health partner: the PAERDUO Smart Ring. Unlike bulky wristbands, this ultra-thin 6mm ring stays comfortable all day and night. Use it to track your heart rate, blood oxygen, and sleep stages without a monthly subscription. The AI sleep analysis distinguishes between deep, light, and REM sleep, helping you understand your rest quality.
For women, the period prediction feature learns your cycle and forecasts ovulation windows. The ring's 5ATM waterproof rating means you can wear it in the pool or shower without worry. Gesture control lets you take photos or switch music with a flick of your hand. With up to 5 days of battery life, you focus on your day, not charging. No subscriptions, no hidden fees—just your data, always accessible.
Features
- Smart Sleep Tracking with AI
- Women's Health & Period Prediction
- Activity & Workout Tracking
- Gesture Control
- 5ATM Waterproof
- Heart Rate & Blood Oxygen Monitoring
General specs
- Brand: PAERDUO
- Seller: Amazon
- ID: B0FBGRXFBW
- Shape: Round
- Weight: 0.0353 ounces
- Band Size: #13 (adjustable)
- Band Color: Silver
- Item Shape: Oval
- Screen Size: 1.5 inches
- Sensor Type: Heart Rate Sensor, Accelerometer, SpO2 Sensor
- Battery Life: 5 Days
- Target Gender: Women, Men
- Operating System: iOS, Android
- Special Features: Heart Rate Monitor, Sleep Tracking, Blood Oxygen Monitor, Steps Tracker, Cycle Tracking, Gesture Control, Fitness Tracker
- Compatible Devices: Smartphone
- Display Technology: OLED
- Product Dimensions: 0.236 inches thickness
- Connectivity Technology: Bluetooth
- Water Resistance Rating: 5ATM (50 meters)
- Communication Standard Wireless: Bluetooth
- First listed by seller: 5/20/26
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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New, Used and Refurbished describe the item condition shown for that Amazon offer.
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Shipping options
United States
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| Model | O Ring | R02 | Smart Ring | |||
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| Price | $54.99 | $49.98 | $39.99 | $239.99 | $39.99 | $19.99 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 20, 2026 | May 29, 2026 | May 20, 2026 | May 20, 2026 | May 29, 2026 | May 29, 2026 |
| Weight | 0.0353 ounces | 0.007 lbs | Not specified | |||
| Battery Life | 5 Days | 5 days (regular use) | Up to 7 days | 5 days | Not specified | |
| Size | 7 | 10 | 7 | 8# | ||
| Material | Silver | Titanium | Not specified | |||
| Compatibility | iOS, Android | women, men | Android, iOS | Mobile App | ||
| Health Monitoring | Heart Rate, Blood Oxygen, Blood Pressure | heart rate detection, blood oxygen level, stress analysis, sleep tracking, step counting | Sleep (deep/light/REM duration, sleep score), Stress, Heart rate, Women's health (menstrual cycle prediction), Basal body temperature, Step tracking, Activity tracking, Mood tracking | |||
| Waterproof Rating | IP68 | 10ATM | IP68, 5ATM | |||
Smart Ring Ultra Thin 6.0mm Fitness Tracker Heart Rate & Blood Oxygen Monitoring
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