A smartwatch is a wearable computer in the form of a watch; modern smartwatches provide a local touchscreen interface for daily use, while an associated smartphone app provides for management and telemetry (such as long-term biomonitoring). While early models could perform basic tasks, such as calculations, digital time telling, translations, and game-playing, smartwatches released since 2015 have more general functionality closer to smartphones, including mobile apps, a mobile operating system and WiFi/Bluetooth connectivity. Some smartwatches function as portable media players, with FM radio and playback of digital audio and video files via a Bluetooth headset. Some models, called watch phones (or phone watches), have mobile cellular functionality like making calls.While internal hardware varies, most have an electronic visual display, either backlit LCD or OLED.Some use transflective or electronic paper, to consume less power. They are generally powered by a rechargeable lithium-ion battery. Peripheral devices may include digital cameras, thermometers, accelerometers, pedometers, heart rate monitors, altimeters, barometers, compasses, GPS receivers, tiny speakers, and microSD cards, which are recognized as storage devices by many other kinds of computers.Software may include digital maps, schedulers and personal organizers, calculators, and various kinds of watch faces. The watch may communicate with external devices such as sensors, wireless headsets, or a heads-up display. Like other computers, a smartwatch may collect information from internal or external sensors and it may control, or retrieve data from, other instruments or computers. It may support wireless technologies such as Bluetooth, Wi-Fi, and GPS. For many purposes, a "watch computer" serves as a front end for a remote system such as a smartphone, communicating with the smartphone using various wireless technologies. Smartwatches are advancing, especially their design, battery capacity, and health-related applications.Health-related applications include applications measuring heart rate, SpO2, workout, etc.
- The Amazfit T-Rex Pro is high-level exploration partner, supporting four Global Navigation Satellite Systems, 10 ATM water-resistance,a blood-oxygen saturation measurement system, a weather tracker, a sunrise and sunset monitor, a current moon phase display, a compass and barometric altimeter, ultra-long 18-day battery life with typical use, and over 100 different sportsmodes
- With a 10 ATM grade, the Amazfit T-Rex Pro is water-resistant to a depth of up to 100 meters2, so you can surf, swim, or explore the mysterious underwater world together
- In high-altitude areas, every meter you travel upward comes with greater challenges The Amazfit T-Rex Pro will therefore alert you whenever it detects that you experience major altitude changes9, and prompt you to take the blood-oxygen saturation test This test can also be taken whenever you feel uncomfortable, in order to better protect your body
- A smartwatch is a portable device designed to be worn on the wrist that supports apps and often records heart rate and other vital signs
- Smartwatches are personal digital devices in the shape of a wristwatch and the latest smartwatches have a fixed graphical display for everyday
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