NexRing User Manual

Use soft cloth or hand wash with mild soap and water to clean the ring.

 

NexRing can be worn in shower, when taking a bath or when swimming. It is even suitable for skin diving with snorkel.

 

 Try to avoid wearing the ring when strength training, working with a shovel or other heavy tools, or carrying heavy objects made of metal, ceramics or stone. In addition, try to avoid wearing the ring next to other rings or objects which are made of metal, ceramics or stones, like diamond. The NexRing may get scratches or it can scratch softer metal jewelry or other

objects in close contact with the ring, like phone covers, made of e. g. gold, silver, aluminum. Also some ceramic phone covers may get scratches, if covered with softer coating.

 

Keep the ring away from children. Do not leave the ring exposed to heat, such as in a vehicle or in the sun. Do not puncture the ring or its battery.

 

The ring material is titanium. Like with all rings made of metals such as silver, gold or steel, be careful when handling batteries when you`re wearing the ring. In some rare cases where both the cathode and the anode of a battery touch the

ring, there is a risk of battery short circuit, similar to normal metal rings without electronics in them.

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About Electrocardiograms

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An electrocardiogram (ECG or EKG) is a test that records the timing and strength of electrical signals that make the heart beat. By looking at an ECG, a doctor can gain insights about your heart rhythm and look for irregularities.

 

Four Things to Remember

 

The ECG app can check your heart rhythm for AFib and show your heart rate. There are some things to remember.

 

• It cannot detect a heart attack.

If you ever experience chest pain, pressure, tightness, or what you think is a heart attack, call emergency services immediately.

• It cannot detect blood clots or a stroke.

• It cannot detect other heart-related conditions.

These include high blood pressure, congestive heart failure, high cholesterol, or other forms of arrhythmia.

• If you are not feeling well you should talk to your doctor.

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Results You May See

 

(1) Sinus Rhythm

A sinus rhythm result means the heart is beating in a uniform pattern. This happens when the upper and lower chambers of the heart are beating in sync. A sinus rhythm result only applies to that particular recording and doesn't mean your heart beats with a consistent pattern all the time.

 

(2) Atrial Fibrillation (AFib)

An AFib result means the heart is beating in an irregular pattern. AFib is the most common form of serious arrhythmia. AFib occurs when the upper chambers of the heart beat out of sync with the lower chambers and this creates an irregular pattern.

If you receive an AFib result and have a heart rate over 100 beats per minute, you should talk to your doctor.

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How serious is AFib?

AFib is a manageable condition that if left untreated can cause blood to clot in the heart. If a clot is pumped out, it can lead to stroke, heart failure, or other medical complications. AFib is diagnosed in approximately 2% of people younger than 65 and about 9% of people 65 and older. It can be temporary or persistent but can be managed with a doctor's care and medication. People with AFib often live healthy, active lives.

 

AFib Symptoms

Some people with AFib don't experience any symptoms. For those who do, common symptoms are:

• Rapid, pounding, or fluttering heartbeat

• Skipped heartbeat

• Fatigue

• Shortness of breath

• Chest tightness or pain

• Fainting

• Dizziness

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(3) Low or High Heart Rate

The heart is beating below 50 beats per minute or over 100 beats per minute (BPM).

The NexRing app will check for AFib if your heart is beating between 50 and 150 beats per minute. A heart rate under 50 BPM or over 150 BPM affects the NexRing app's ability to check for AFib and the recording is considered inconclusive.

 

Heart Rate Under 50 BPM:

The app can't check for AFib and the recording is classified as Low Heart Rate.

A heart rate can be low because of certain medications or if electrical signals are not properly conducted through the heart. Training to be an elite athlete can also lead to a low heart rate.

 

Heart Rate Between 100 and 150 BPM:

The app will check for AFib. If no AFib is detected, it will classify the recording as High Heart Rate.

 

Heart Rate Over 150 BPM:

The app can't check for AFib and the recording is classified as High Heart Rate >150.

A high heart rate could be due to exercise, stress, nervousness, alcohol, dehydration, infection, or AFib.

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(4) Inconclusive

An inconclusive result means the recording can't be classified. This can happen for many reasons such as the presence of a pacemaker or an arrhythmia the app cannot recognize.

 

There are factors that consistently cause an Inconclusive result.

• You have a pacemaker or implantable cardioverter defibrillator (ICD).

• The recording may show signs of other arrhythmias or heart conditions that the app is not designed to recognize.

• Poor electrical signal in the recording. This can happen for a variety of reasons and a small percentage of people don't create enough signal to produce a good recording.

 

(5) Poor Recording

A poor recording can't be classified and can happen for many reasons such as not resting your hand on a table or your ECG Ring is too loose.

 

If you get a Poor Recording result, there are a few things you can try in order to get a better recording.

• Rest your hand on a table or in your lap while you take a recording. Try to relax and not move too much.

• Make sure your ECG Ring isn't loose on your finger. The sensors of your ECG Ring need to be touching your finger.

• Make sure your finger and your ECG Ring are clean and dry. Water and sweat can cause a poor recording.

• Make sure your ECG Ring is on the finger you selected in Settings.

• Move away from any electronics that are plugged into an outlet to avoid electrical interference.

 

Note: These results are not a diagnosis. Do not change any medications or treatment without talking to your doctor.

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Safety and Product Information

 

Specifications

 

• Outer surface materials Titanium steel with PVD coating in Silver and Gold

• Inner surface materials Non-allergenic, non-metallic seamless inner molding

• Memory capacity 1 week

• Battery rechargeable 15mAh(US7)-22mAh(US13) Lipo battery, non-replaceable

• Battery life Up to 1 week, depending on the amount of sleep and activity

 

Dispose of the ring and battery in accordance with applicable local laws and regulations. Special handling may be required.

 

• Charging charging with NexRing wireless stand.

• Charging time 30-180 minutes.

• Connectivity Bluetooth Low Energy (BLE).

• Ring firmware update ability Automatic firmware updates via NexRing app.

• NexRing app availability App Store, Google Play Store.

• NexRing app compatibility See Linktop.com

• Privacy Data encryption, secure pairing of the ring and the app.

• Water resistant To 50m/164ft.

• Endures drop of 1m/3.3ft or equivalent impact.

• Operating temperature -10-55℃/14-131°F.

• Charging temperature 0-45℃/32-113°F (room temperature recommended).

• Charger input connector and voltage USB-C connection. USB nominal 5V.

 

Charger shall be supplied by a power source that shall meet with clause 2.5 of the standard for limited power supply.

 

Charger complies with EN / IEC 60950-1international safety standard for IT equipment.

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Warranty Disclaimer

 

Except for the limited warranty for the ring forth below, the ring and the NexRing Services are provided by LINKTOP and its affiliates “As is.”

 

Neither Linktop partners, suppliers, or affiliates make any representations or warranties of any kind, express or implied, as to the operation of the NexRing Services (Including the ring), its contents, or any information made available by or through the NexRing Services. In addition, Linktop and its partners, suppliers and affiliates disclaim all warranties with respect to the NexRing Services (Including the ring), express or implied, including but not limited to the implied warranties of merchantability, title, fitness for a particular purpose and non-infringement. Furthermore, Linktop does not warrant that use of the NexRing Services will be uninterrupted, available at any time or from any particular location, secure or error-free, that defects will be corrected, or that the NexRing Services (Including the ring) are free of viruses or other potentially harmful components.

Limited warranty for the ring. Linktop warrants to the original end user purchaser that the ring is free from defects in material and workmanship for one (1) year from the date of purchase.

If your local law in effect at the time of purchase requires a warranty period longer than one (1) year, this warranty shall be extended to the extent required by such law. Within the warranty period, Linktop shall repair or replace at no charge to you any components of the ring that fail the limited warranty provided. You shall be responsible for any related transportation charges. Replacement products may be new or refurbished at our discretion. This limited warranty does not apply to (i) normal wear and tear, including Scratches and dents; (ii) consumable parts included in ring such as batteries, unless product damage has occurred due to a defect in materials or workmanship; (iii) damage resulting from your failure to use the ring in accordance with the instructions accompanying the ring or available at our website; (iv) damage resulting from an accident, flood, fire, misuse, or abuse; (v) damage resulting from service performed, or damage resulting from tampering or alterations to the ring, by anyone not authorized by Linktop; or (vi) use of the ring with any other application or software than the NexRing mobile app.

Linktop retains the exclusive right to repair or replace the ring, or offer a full refund, at its sole discretion. Such remedy shall be your sole and exclusive remedy for any breach of warranty. Warranty repairs and replacements have a new warranty which is the longer of ninety (90) days or the balance of the original one-year warranty.

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Limitation of Liability

 

In no event will Linktop or any of its affiliates be liable for direct, indirect, incidental, punitive or consequential damages (Including without limitation those resulting from lost profits, lost data or business interruption) arising out of the use, inability to use or the results of use of the ring and the NexRing Services, whether such damages are based on warranty, contract, tort or any other legal theory and whether or not Linktop has been advised of the possibility of such damages. The aggregate liability of Linktop, arising from or relating to the ring and NexRing Services (Regardless of the form of action or claim, E.G. Contract, warranty, tort, strict liability, negligence, or any other legal theory) is limited to $100. In some locations applicable law may not allow certain of the limitations described above, in which case such limitations will apply to the maximum extent allowed by such applicable law.

 

Terms of Use

 

Your use of the NexRing products and services is subject to our Terms of Use and Privacy Policy, available at NexRing App or https://www.linktop.com. The Content and warranty Disclaimer and the Limitation of Liability set forth above are from our Terms of Use and are subject to change if we change our Terms of Use.

 

In order to satisfy the essential requirements of 2014/53/EU Directive, the product is compliant with the following standards: