Anbspsmartwatchnbsp(ornbspsmart watch) is anbspcomputerizednbspwristwatch with [[function]]ality that is enhanced beyondnbsptimekeeping. While early models can per[[form]] basic tasks, such asnbspcalculations,nbsptranslations, andnbspgame-playing, modern smartwatches are effectivelynbspwearable computers. Many smartwatches runnbspmobile apps, while a smaller number of models run anbspmobile operating systemnbspand [[function]] asnbsppor[[table]] media p[[layer]]s, offering playback ofnbspFM radio, audio, and video files to the user via anbspBluetoothnbsp[[head]]set. Some smartwatches models, also callednbspwatch phones, feature fullnbspmobile phonenbspcapability, and can make or answer phone calls. Such devices may include features such as anbspcamera,nbspaccelerometer,nbspthermometer,nbspaltimeter,n
GPS navigation, Map display,nbsp
SDcardsnbspthat are recognized as anbsp
mass storage devicenbspby anbsp
rechargeable battery. It may communicate with anbsp
modem, or other devices.
- Some also have "
sport watch" [[function]]ality withnbsp
activity trackernbspfeatures (also known as "
fitness tracker") as seen innbsp
GPS watchesnbspmade for Training, Diving, and Outdoor sports. [[function]]s may include training programs (such as intervals), Lap times, speed display,nbsp
GPS tracking unit, Route tracking,nbsp
heart rate monitornbspcompatibility,nbsp
Cadencenbspsensor compatibility, and compatibility with sport transitions (as innbsp
- Like othernbsp
computers, a smartwatch may collect in[[form]]ation from internal or external sensors. It may control, or retrieve data from, other instruments or computers. It may support wi[[rel]]ess technologies like Bluetooth,nbsp
GPS. However, it is possible a "wristwatch computer" may just serve as a front end for a remote system, as in the case of watches utilizing cellular technology or Wi-Fi.
Despite the growing market for smart watches and activity trackers, the ear is a much better source of data because it offers an area where blood flows neatly in and out, providing a much stronger signal and less noise. Wearables with Valencell Per[[form]]Tek biometrics measure signals with the [[body]] through the ear with an optical emitter, photodetector, and accelerometer into an earbud. Valencells technology has also been implemented in heart rate monitoring armbands (such as the Scosche Rhythm).nbsp