How do Smart Watches measure the heart beat on the wrist?
The heart rate monitor is based on a technology called photoplethysmography, but it basically comes down to using green LED lights paired with light‑sensitive photodiodes to illuminate your skin and measures changes in light absorption.
This lets the device detect the amount of blood flowing through your wrist at any given moment. Because blood is red, it reflects red light and absorbs green light.
“When your heart beats, the blood flow in your wrist — and the green light absorption — is greater. Between beats, it’s less,”.
The sensor are designed to compensate for low signal levels by increasing both LED brightness and sampling rate. That’s why the heart rate sensor on the back of the device flashes its LED lights hundreds of times per second, helping the device calculate heart rates precisely.
But when it measures your heart rate every ten minutes, the Watch switches to using infrared light. And if it fails to provide an adequate reading while using the infrared light, the device switches back to the green LEDs.
In order for the sensor to work as advertised, the Watch must be close to your skin. The company advises tightening the band in case the sensors aren’t reading your heart rate accurately.
All in all, the heart rate sensor in the Watch is a great feature, especially if you’re something of a fitness buff. It checks your heart rate during workouts for an at-a-glance overview of both the intensity level and the heart rate change over time.
Measuring Heart Rate Using Smartwatch
If you want to get a really accurate heart rate measurement, using a smartwatch monitor is going to give you the best results. Most heart rate monitors these days not only provide you with an accurate measurement of your pulse, but they can also store the values so they can be later accessed or can help you track your activities like a fitness band as well as give you SMS and email notifications like a phone.
As you can see, there are many factors that affect heart rate and if you notice you have a consistently high or low pulse, it’s best you get in touch with your doctor right away. By doing so, you’ll be able to see what condition affects your heart and consider the right treatment to keep it under control.
This is crucial, as having continuous readouts of one’s heart beat in the Health app is indispensable when correlating your workouts and heart rates. In addition to your heart rate reading, the Watch collects other data to provide estimate on calories burned.
Aside from the heart rate sensor itself, it may tap into other sensors depending on your activity. In one example, running indoors prompts the Watch to use its built-in accelerometer.
But go cycling outdoors and the Watch starts using the GPS in your Phone, if available, to track your activity with great precision in order to provide as accurate estimate on calories burned as possible.the Watch learns about your stride enough over time to start accurately track workouts without an Phone.
Blood Pressure & Blood Oxygen Monitor
Through the built-in blood oxygen meter does not need to be able to accurately monitor the blood oxygen saturation and pulse, to avoid the cumbersome to the hospital. To detect family and their physical condition at anytime, anywhere. Can effectively prevent danger. If you encounter hypoxia, the first time oxygen and greatly reduce the change of disease onset.
It's the first Blood Pressure smartwatch in the market. It's good for fitness and activity tracking.
The product is made of difference materials and colors, follow up fashion trend, make you so confidently to face different people and occasions. In the traditional movement of the step ring built-in optical blood pressure, heart rate sensor, real-time blood pressure, and heartbeat detection!Monitoring your health in real time.
Through find the phone function, there will be no worries of missing phone again when a mobile phone is beyond the valid Bluetooth distance (6m-10m) with the device, the smart band will vibrate to remind.
Continually track your daily life in 24 hours, work 5 days by one charge, it is really convinced, fast and your close partner.
All In One
Blood pressure measurement
Alarm clock reminder
Drink water Reminder
Social software, SMS information shows support for 50 words display on the bracelet screen
Screen size: 0.96 IPS inch color LCD
Compatible system: Android 4.4 & IOS 8.2 and above with Bluetooth 4.0
Features: Dynamic and static blood pressure, Heart rate
Main functions: Blood Oxygen, Pedometer, Step, Calorie, Distance, Sleep monitor, Sport mode, Incoming call notification, Alarm clock, APP notifications, Stopwatch, Raise hand screen light, Social share ( Wechat, QQ, Facebook, Twitter)
Battery capacity: 110 mAh
Waterproof: IP67 (support swimming / Rain / Washing hands, Not support Hot Bath / Hot Water / Diving / Underwater Swimming)
1* Smart Bracelet
1* USB Charger
1* Retailed Box
This smartwatch health can help you lose weight and maintain your fitness goals, can offer the motivation of a personal trainer, the insights of a sleep therapist and you can even count every calorie going in and out.
The fitness and health functionality of these devices can help you to maintain a day to day fitness schedule and help you reach your weight loss goals.Be fashionable and be fit!This is the latest in the smart watch industry -- all-in-one wrist watch that monitors vital signs of your health. To become health and wellbeing is a dream for every person, and this beautiful-elegant device absolutely can help you.
Buy this one for your loved one - change their lifestyle, this amazing device can even measure your blood pressure and blood sugar as well.
***Like any other devices, data from the device are for guideline & reference only and should not be used as medical advice.***
🔥Extremely high demand: Hence fulfillment may be delayed, so we appreciate your patience! (We ship with USPS & DHL tracking number).