1. What are the specifications of the Q520?
Size
| Size | Diameter | Perimeter | International |
| --- | --- | --- | --- |
| Size 8 | 18.2mm | 58.2mm | 17 |
| Size 9 | 19.0mm | 59.6mm | 19 |
| Size 10 | 19.9mm | 62.5mm | 22 |
| Size 11 | 20.7mm | 65.0mm | 24 |
Specifications:
Bluetooth: 5.3 BLE (Low Power Consumption)
Main Controller: NORDIC NRF52832
Acceleration Sensor: STK8321
PPG Sensor: Goodix 3228T + 2*SFH2703
ECG Sensor: Goodix 3228T
Battery Capacity: 18mAh
Battery Life: 4–6 days of daily use, 30+ days of standby
Charging Method: Magnetic adsorption (with short-circuit protection)
Shell Material: Medical-grade alloy metal
Product Color: Full-light black
Compatible Systems: Android 6.0 or above / iOS 11.0 or above
2. What is the NORTH EDGE Q520?
The Q520 is a high-end ECG blood oxygen health smart ring — an AI health detector worn on the finger. Wear it to monitor your health conditions around the clock, then check the AI health reports for various items through the health application program. Welcome to the new era of health at your fingertips.
3. What health functions does the Q520 have?
The Q520 provides:
Heart rate
Blood oxygen
ECG detection
Body temperature
blood pressure
blood glucose
Sleep monitoring
Exercise pedometer
Multi-exercise mode
Note: This product is not a medical device. The health data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
4. What about the ECG function?
The smart ring is equipped with a high-performance medical-grade ECG sensor. It uses a circular electrode to collect heart signals in real time. Combined with PPG photoplethysmography technology, it can simultaneously monitor data such as heart rate and blood oxygen levels, keeping a constant eye on heart health. The detection results automatically generate a diagnostic report through an AI algorithm, which can identify 12 abnormal patterns such as sinus rhythm, atrial fibrillation, and premature beats.
Note: This product is not a medical device. The ECG data and analysis results provided are for reference only and shall not be used as a basis for diagnosis or treatment.
5. What about heart rate monitoring?
The Q520 continuously monitors the fluctuations in heart rate, blood oxygen levels and other parameters, tracks the status of heart function, and promptly detects any abnormal conditions.
Note: This product is not a medical device. The heart rate data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
6. What about blood oxygen monitoring?
The monitoring of blood oxygen saturation helps you keep an eye on whether your body is suffering from oxygen deficiency at all times. It provides you with round-the-clock intelligent blood oxygen measurement, constantly taking care of your blood oxygen health.
Note: This product is not a medical device. The blood oxygen data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
7. What about blood pressure monitoring?
Connected to the APP, you can view the measurement data and the periodic change trend of blood pressure, which helps you understand your own blood pressure pattern and fluctuation, so as to adjust your lifestyle and develop healthy habits.
Note: This product is not a medical device. The blood pressure data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
8. What about blood glucose monitoring?
The smart ring can monitor your blood glucose data in real time. The data will be automatically synchronized to the mobile phone APP. You can intuitively view the blood glucose change curve, enabling you to have an in-depth understanding of your blood glucose levels and your own physical condition.
Note: This product is not a medical device. The blood glucose data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
9. What about body temperature monitoring?
The Q520 supports body temperature monitoring through the health application — keeping track of your temperature around the clock.
Note: This product is not a medical device. The body temperature data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
10. What about sleep monitoring?
With the scientific sleep monitoring function, the Q520 can monitor various sleep states, including deep sleep, light sleep, rapid eye movement (REM) and wakefulness. It can conduct an in-depth evaluation of your sleep quality, helping you develop good sleep and wake-up habits.
Note: This product is not a medical device. The sleep data provided is for reference only and shall not be used as a basis for diagnosis or treatment.
11. What about sports and activity tracking?
The Q520 records the daily activity steps and helps you formulate a sports plan. It supports various sports modes such as running, cycling, skipping rope, and fitness, with intelligent recognition of professional sports. It records data such as exercise duration, distance, calorie consumption, steps, and heart rate during your exercise and conducts analysis — making your exercise more professional and standardized.
12. How do I use the ECG measurement?
It is easy to operate — you can start the measurement with just one touch:
1. Place the hand wearing the ring with all fingers spread out flat on a tabletop or your knee, and make sure the sensor of the ring is in contact with the pulp of the finger.
2. Place the first knuckle of the other hand on the curved surface of the ring.
3. When starting the measurement, please note that the two hands should not touch each other.
13. What about the battery and charging?
The Q520 adopts the NORDIC NRF52832 chip with the lowest power consumption in the industry, equipped with a battery with a capacity of 18mAh. In daily usage scenarios, the battery life can reach 4 to 6 days; when in standby mode, the battery life can reach over 30 days. The charging case adopts a mini-portable design concept — just put the smart ring into the case, and it will automatically snap onto the magnetic charging interface. Close the lid, and the charging process starts effortlessly.
14. Is the Q520 waterproof?
Yes. The Q520 has a 5ATM waterproof rating. You can wear the smart ring when you wash your hands, take a shower or swim in the sea. Even if it is completely immersed in water during wearing, it can still continuously monitor your health condition.
15. What material is the Q520 made of?
The casing of the smart ring is crafted from medical-grade alloy metal. Through the high-energy vacuum ion plating technology, a deep obsidian-colored coating is deposited with nanometer-level precision. It presents a mysterious and profound metallic luster resembling a black hole, and the touch feels as delicate as silk.
To find your size: wrap a paper strip around the joint and the root of the finger on which the ring will be worn respectively for one circle, adjust it to a comfortable position and make a mark at the intersection, then measure the length and take the larger value. (Note: There are differences in the sizes of the left and right hands — measure the ring size according to the finger on which the ring will be worn.)
16. Is the Q520 comfortable to wear?
Yes. With a thickness of only 2.1mm and a weight of 4.2g (more than 30% lighter than a coin), the precise microelectronic structure has been compressed layer by layer to create an ultra-thin arc surface with a silk-like texture. It perfectly conforms to the curvature of the pulp of the finger — when worn, it feels like a second skin, with no burden even when wearing it all day long.
17. What is included in the package?
The package typically includes:
NORTH EDGE Q520 Smart Ring
Charging case
User Manual
Original Gift Box
Warranty Card (Scan the provided QR code to follow our social media, or visit our official website and click "After-Sales Service" to register your warranty information.)
18. How can I contact NORTH EDGE Customer Support?
Email: info@northedgewatches.com
You can also start a chat by clicking the "CHAT" icon on the (https://northedgewatches.com) website.
