Wear OS

Android WearWear OS by GoogleWearOSsmartwatchWear
Wear OS (also known as Wear OS by Google, and previously known as Android Wear) is a version of Google's Android operating system designed for smartwatches and other wearables.wikipedia
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Android (operating system)

AndroidAndroid operating systemList of Android devices
Wear OS (also known as Wear OS by Google, and previously known as Android Wear) is a version of Google's Android operating system designed for smartwatches and other wearables.
Some well known derivatives include Android TV for televisions and Wear OS for wearables, both developed by Google.

Moto 360 (1st generation)

Moto 360Moto 360 (2014)Motorola Moto 360
Released devices include Motorola Moto 360, the LG G Watch, and the Samsung Gear Live.
The Moto 360 is an Android Wear-based smartwatch announced by Motorola Mobility in 2014.

Google Assistant

AssistantGoogle Duplex
By pairing with mobile phones running Android version 4.4 or newer, or iOS version 9.3 or newer with limited support from Google's pairing application, Wear OS integrates Google Assistant technology and mobile notifications into a smartwatch form factor.
After a period of exclusivity on the Pixel and Pixel XL smartphones, it began to be deployed on other Android devices in February 2017, including third-party smartphones and Android Wear (now Wear OS), and was released as a standalone app on the iOS operating system in May 2017.

LG G Watch

G Watch
Released devices include Motorola Moto 360, the LG G Watch, and the Samsung Gear Live.
The LG G Watch (model W100, codenamed Dory) is an Android Wear-based smartwatch announced and released by LG and Google on June 25, 2014.

Samsung Gear Live

Gear Live
Released devices include Motorola Moto 360, the LG G Watch, and the Samsung Gear Live.
The Samsung Gear Live is an Android Wear-based smartwatch announced and released by Samsung and Google on June 25, 2014.

Google

Google Inc.Google, Inc.Google LLC
Wear OS (also known as Wear OS by Google, and previously known as Android Wear) is a version of Google's Android operating system designed for smartwatches and other wearables.
Google develops the Android mobile operating system, as well as its smartwatch, television, car, and Internet of things-enabled smart devices variations.

Asus ZenWatch

ZenWatch
The next batch of Android Wear devices, which arrived at the end of 2014, included the Asus ZenWatch, the Sony SmartWatch 3, and the LG G Watch R.
The Asus ZenWatch is an Android Wear-based smartwatch announced on September 3, 2014 at IFA and released by Asus on November 9, 2014.

LG G Watch R

G Watch R
The next batch of Android Wear devices, which arrived at the end of 2014, included the Asus ZenWatch, the Sony SmartWatch 3, and the LG G Watch R.
The LG G Watch R (model W110) is an Android Wear-based smartwatch announced and released by LG and Google on October 25, 2014.

Smartwatch

smart watchsmartwatcheswatch phone
Wear OS (also known as Wear OS by Google, and previously known as Android Wear) is a version of Google's Android operating system designed for smartwatches and other wearables.
At Google I/O on 25 June 2014, the Android Wear platform was introduced and the LG G Watch and Samsung Gear Live were released.

Huawei Watch

Watch
, the latest Wear OS devices are the LG Watch Urbane, and the Huawei Watch.
The Huawei Watch is an Android Wear-based smartwatch developed by Huawei.

Google Fit

Via Google Fit and similar applications, Wear OS supports ride and run tracking ("OK Google, start a run").
Google Fit is a health-tracking platform developed by Google for the Android operating system, Wear OS and Apple Inc.'s IOS.

Android Lollipop

LollipopAndroid 5.0 "LollipopAndroid 5.0 Lollipop
On December 10, 2014, an update started to roll out, adding new features including a watch face API and changed the software to be based on Android 5.0 "Lollipop".
Alongside Lollipop, the presentation focused on a number of new Android-oriented platforms and technologies, including Android TV, in-car platform Android Auto, wearable computing platform Android Wear, and health tracking platform Google Fit.

LG Electronics

LGLG Smart TVLG Electronics, Inc.
Hardware manufacturing partners include Asus, Broadcom, Fossil, HTC, Intel, LG, MediaTek, Imagination Technologies, Motorola, New Balance, Qualcomm, Samsung, Huawei, Skagen, Polar, TAG Heuer and Mobvoi.
LG and Google announced the Android Wear-based smartwatch, the LG G Watch, that was in June 2014.

List of Wear OS devices

The following is a comparative list of wearable devices using the Wear OS operating system.

Sony SmartWatch

Sony SmartWatch 3SmartwatchSmartWatch 3
The next batch of Android Wear devices, which arrived at the end of 2014, included the Asus ZenWatch, the Sony SmartWatch 3, and the LG G Watch R.
As noted by ABI Research, "The SmartWatch 3 has many new features such as waterproof (IP68 rated, not just resistant), improved styling, transition to Android Wear, and introduction of a new wearable platform from Broadcom. ... [It's] based on the Broadcom system-on-chip (SoC) platform which includes a 1.2GHz Quad-core ARM Cortex A7 processor (BCM23550), an improved GPS and ambient light sensor processing SoC (BCM47531) capable of simultaneously tracking five satellite systems (GPS, GLONASS, QZSS, SBAS, and BeiDou), the now popular Wi-Fi 802.11n/BT/NFC/FM quad-combo connectivity chip (BCM43341), and a highly integrated power management IC (BCM59054)."

Mobvoi

Hardware manufacturing partners include Asus, Broadcom, Fossil, HTC, Intel, LG, MediaTek, Imagination Technologies, Motorola, New Balance, Qualcomm, Samsung, Huawei, Skagen, Polar, TAG Heuer and Mobvoi.
Wear OS by Google formed a strategic partnership with Mobvoi to work together on the efforts to bring Wear OS by Google to China.

AsteroidOS

It is available as a firmware replacement for some Android Wear devices.

LG Watch Urbane

LG Watch Urbane LTEWatch Urbane
, the latest Wear OS devices are the LG Watch Urbane, and the Huawei Watch.

Google I/O

developer conferenceI/OGoogle IO
On June 25, 2014, at Google I/O, the Samsung Gear Live and LG G Watch were launched, along with further details about Android Wear.

Android TV

Android TV,AndroidTVtelevision
The Verge characterized it as being more in line with other digital media player platforms, but leveraging Google's Knowledge Graph project, Chromecast compatibility, a larger emphasis on search, closer ties to the Android ecosystem (including Google Play Store and integration with other Android families such as Android Wear), and focusing on supporting video games on the platform with support for Bluetooth gamepads and the Google Play Games framework.

Google Play

Google Play StoreAndroid MarketPlay Store
Apps meeting specific usability requirements can qualify as a Wear OS app.

Google Glass

Project GlassGoogle Glass Breastfeeding app trialGlass
On June 25, 2014, Google announced that notifications from Android Wear would be sent to Glass.

Google Keep

Keep
Note taking is fully supported via Google Keep and other note-apps, as is marking-off check lists etc. Via voice commands such as "OK Google, remind me to call Roy at work", or "Remind me to baste the chicken in 25 minutes" the user can create location and time-based reminders, set alarms, timers etc. which appear on the watch at the appropriate time or place.
The Android app is compatible with Android Wear.