Huawei, after a lot of leaks and rumours, introduced the Huawei Watch D smartwatch. One of the features of this device is the function of measuring blood pressure using a miniature cuff built into the strap.
By the way, the idea is not new. Back in 2018, the Japanese company Omron showed at CES 2018 a working copy of the Omron HeartGuide watch, which measures pressure on the same principle as a conventional sphygmomanometer. And in early December, the Chinese startup YHE announced its smartwatch with a blood pressure monitor – YHE BP Doctor MED. But, apparently, Huawei Watch D is significantly superior in functionality to both of these devices.
The body of the device is made of aluminium alloy. The weight without the strap is 40.9 grams and the dimensions are 51mm x 38mm x 13.6mm. Protection of the case against water and dust complies with the IP68 standard, but the manufacturer does not recommend using the gadget while swimming and doing water sports.
Huawei Watch D is equipped with a 1.64-inch AMOLED screen with a resolution of 456 * 280 pixels (326 PPI density). The watch runs on the HarmonyOS operating system and is compatible with smartphones based on HarmonyOS 2, Android 6.0, and later, and iOS 9.0 and later.
The equipment includes the following sensors:
- 6-axis inertial sensor (accelerometer + gyroscope)
- Optical heart rate sensor
- Temperature sensor
- ALS sensor
- Differential pressure sensor
- Hall Sensor
- ECG registration sensor
There are Bluetooth 5.1, GPS, and NFC modules. The latter can be converted into an access card or a transport card. The built-in microphone allows you to “communicate” with the voice assistant, support for call and message notifications, weather forecast, alarm clock, and various reminders, track the duration and quality of sleep, monitor more than 70 sports modes, track stress levels, activity monitoring and measurement of blood oxygen (SpO2 ).
The built-in temperature sensor allows you to control the temperature of the skin and body. Blood pressure measurement uses a hybrid technology that combines a high-performance micro-pump, PPG sensors, a pressure feedback control circuit, and a low-resistance gas path.
All together provides pressure measurement with an error within ± 3 mm Hg. pillar, that is, like most medical blood pressure monitors. The Huawei Watch D has even received a second-class medical device registration certificate from the China Food and Drug Administration.
ECG sensors allow you to get the most detailed assessment of the work of the heart. The device can assess the risk of arteriosclerosis, detect atrial fibrillation, etc. The availability of the Huawei Watch D Malaysia varies depending on the retailer and location.
The battery with a capacity of 451 mAh is responsible for the autonomy of the watch. One charge lasts up to 7 days of typical use. Typical usage scenario includes 24/7 smart heart rate monitoring, sleep monitoring, one blood pressure measurement 6 times a day, ECG measurement 5 times, an average of 90 minutes of exercise per week, message notifications (50 messages per day, 6 calls, 3 alarms), turning on the screen up to 200 times a day.