ECG Blood Glucose Smartwatch with 2.2" Curved Display | Carelders QS21

$164.99 $88.88

Color: Black

Black
Pink
Gray

shopify payvisamasteramerican expressdiners clubdiscoverapple paygoogle payamazon paymentspaypal
Description

Aerospace Aluminum Design with 2.2" Curved Full Screen

The Carelders QS21 features an ultra-thin 2.2-inch curved full-screen display built with a premium aerospace aluminum body.
Its seamless design offers clear visibility, lightweight comfort, and a modern high-end look.

Dual-Engine ECG + PPG Hybrid Detection

QS21 is equipped with ECG + PPG hybrid sensing, using sixth-generation technology to capture multi-dimensional cardiac electrical signals with hospital-grade clarity.
Waveform accuracy is improved by 200%, supporting advanced heart screening.

Millisecond-Level ECG Waveform Recording

Perform a 30-second ECG test anytime.
The watch generates dual-channel ECG waveforms and provides cardiac analysis directly through the app—ideal for monitoring arrhythmia trends and overall heart condition.

Real-Time Cardiac Screening System

The watch analyzes ECG morphology, waveform abnormalities, and potential early cardiac risks, helping users gain deeper insight into their heart health status.

Automatic Temperature Monitoring

Built-in precision sensors continuously track skin temperature and body temperature, providing real-time alerts for abnormal fluctuations.

24/7 Intelligent Heart Rate Monitoring

The upgraded heart-rate engine enables continuous heart rate monitoring, dynamic analysis, and abnormal heart-rate alerts, ensuring safer everyday activity and exercise.

Blood Pressure Monitoring with Trend Reports

With enhanced FITBLOOD 4.0 technology, QS21 tracks systolic and diastolic blood pressure, generating 7-day, 30-day, and 90-day trend charts for long-term health evaluation.

Blood Oxygen Monitoring + Sleep Apnea Alerts

The watch offers SpO₂ monitoring, detecting nighttime oxygen drops and potential sleep apnea risks with real-time respiratory analysis.

100+ Sports Modes with Full Training Metrics

Choose from 100+ sports modes, including walking, running, cycling, rowing, and indoor training.
The watch records calories, pace, distance, heart rate zones, and exercise duration.

Continuous Blood Oxygen Training Engine

A six-core optical module ensures accurate all-day blood oxygen monitoring, essential for breathing health, especially during sleep.

Blood Lipid & Uric Acid Trend Evaluation

AI-powered metabolic analysis helps evaluate trends in uric acid, cholesterol, triglycerides, and other wellness indicators, supporting better long-term management.

Professional Sleep Monitoring with HRV

QS21 analyzes deep sleep, light sleep, REM cycles, overnight heart rate, breathing patterns, and HRV, generating a full sleep quality assessment.

Non-Invasive Blood Glucose Trend Monitoring

Using advanced optical rheology, QS21 records blood glucose fluctuations without finger pricks.
Daily curves show glucose stability, lifestyle influence, and long-term patterns.

Smart Daily Tools Integrated

The watch includes practical features such as weather forecast, alarm, camera control, hydration reminders, stopwatch, and sedentary alerts.

Micro Physical Examination Feature

A one-tap test evaluates blood pressure, heart rate, oxygen, temperature, stress, fatigue, and HRV, creating a quick wellness summary.

SOS Emergency Call

Long-press SOS to instantly call preset emergency contacts, providing added safety for seniors, outdoor users, and high-risk situations.

Offline Alipay Payment Support

Supports offline QR-code payment, allowing users to complete purchases without carrying a smartphone.

IP67 Waterproof Protection

The QS21 is IP67 water-resistant, safe for daily handwashing, rain exposure, and sweat.

Smart Notifications + Bluetooth Calling

Receive calls, messages, and app notifications (WhatsApp, Facebook, Gmail, SMS) directly on your wrist, with stable Bluetooth calling support.

Shipping Policy

Shipping policy

This policy is designed to ensure that you know our shipping policies and procedures. By ordering from this store, you accept the policies contained herein.

Total Delivery Time: Order Processing Time (1-3 business days) + Standard Shipping (3-10 business days) or Fast Shipping (1-7 business days)

Your orders are processed within 1 to 3 business days (excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.

Free shipping?

Free shipping on orders over $59 within our deliverable countries.

Shipping cost and transit time

Shipping time is estimated and commences from the date of shipping rather than the date of order. It can take longer than expected due to invalid addresses, customs clearance procedures, or other causes.

Orders are not shipped on weekends or delivered on Holidays. Saturday and Sunday are not included in shipping days.

Flat Rate Shipping:

  • Standard Shipping (3-10 business days) - $5.99 ( Free over $59 )
  • Fast Shipping (1-7 business days) - $12.00 ( Free over $120 )
  • Fast Shipping (1-7 business days) - $ 6.00 ( Over $59 )

 

How do I check the status of my order?

When your order has shipped, you will receive an email notification from us which will include a tracking number you can use to check its status. Please allow 48 hours for the tracking information to become available.

Order tracking tool: https://carelders.com/pages/track-your-orders

Can I Amend My Order?

We work super quickly at processing orders to make sure you receive them as soon as possible. You can amend your order as much as you like before you click “complete order” but after this you may not be able to make amendments. However, please email us as soon as possible at service@carelders.com to see if it is possible to amend your order.

Can I Cancel My Order?

If you have placed your order within 24 hours, please email service@carelders.com and we can cancel your order for you and issue you a full refund. Unfortunately, it is not possible to cancel your order after 24 hours as our warehouse will have processed your order.

I Have Entered An Incorrect Address!

If you have misspelled or auto-filled your address incorrectly, please email us ASAP at service@carelders.com and provide your new address.

What If My Parcel Is Delayed?

On very rare occasions, the delivery may take longer than the standard shipping time stated above. Most of the delays are caused by customs, which, unfortunately, we can’t control. We seek your patience and understanding should this happen.

Will My Items Come Together?

We strive to only ship complete orders. However, in particular cases, your order can be split into several packages. This is mainly caused by different supply warehouse locations. In this case, you will be provided with two or more tracking numbers. Don’t panic if you don’t receive all of your items at once…they will get to you! 🙂

Do I Need To Pay Custom Fees?

In most cases, customs fees do not apply. In some rare cases, you may be charged handling fees and taxes as your order passes through customs. Any charges on a parcel must be paid by the person receiving the parcel (this also applies to retail & wholesale customers). Unfortunately, Carelders has no control over these charges and we can’t tell you what the cost would be, as customs policies and import duties vary widely from country to country.

Can I Return My Order?

If you would like to return your order, please email to arrange a return. Our refund policy lasts 30 days so please let us know within 30 days of receiving the item if you would like to return it.

My Item Arrived Damaged!

We do ship every item with extra padding. Despite this, our customers report that around 1 in 1000 products arrives damaged due to mail service mistreatment.

If this happens to you, email us and provide:

– Your order number.

– A picture of the damaged product.

Once received, we’ll be happy to send out another free of charge.

I have a question that was not answered, can you please help?

If you have any further questions or comments, you may contact us by:

Warranty Information

Warranty

"This warranty is valid for a period of two years from the date of purchase.

During this period, if the product does not function as advertised or is found to be defective, the manufacturer (Carelders) will repair or replace the product at no additional cost to the customer.

This warranty does not cover damage caused by misuse, water, fall or improper handling of the smartwatch.

To claim this warranty, the customer must provide proof of purchase and contact the manufacturer (Carelders) for instructions on how to proceed. This warranty is non-transferable and applies only to the original purchaser of the product."

To make a claim under this warranty, the customer should follow the following steps:

Gather all necessary information and documents, including proof of purchase, such as a receipt or invoice, and other relevant documents.

Contact Carelders customer service to inform them of the problem and provide the required information and documents. The customer service representative will assist the customer in determining whether the product is covered under warranty and provide instructions on how to proceed with the claim.

Follow the customer service representative's instructions, which may include returning the product to Carelders for inspection or repair. The customer is responsible for any shipping and handling costs associated with returning the product.

Once Carelders has received the product and verified that it is under warranty, they will repair or replace the product and return it to the customer. If the product is repaired, it will be returned to the customer in good working condition. If the product is replaced, it will be replaced with a new or refurbished product of the same model.

If the customer is not satisfied with the outcome of the claim, they may contact Carelders Customer Service for further assistance.