History of Smartwatches
Smartwatches are wearable computers that provide a touchscreen interface, mobile apps, wireless connectivity and health-related applications. But how did they evolve from simple digital watches to sophisticated devices that can rival smartphones? Here is a brief history of smartwatches and their key milestones.

Early Years (1927-1984)
The first device that could be considered a smartwatch was the Plus Four Wristlet Route Indicator, launched in 1927. It was a mechanical watch that had a scroll map cartridge for navigation. The user had to manually turn the knob to see the map1.
The first digital watch was the Pulsar, manufactured by Hamilton Watch Company in 1972. It had LEDs and a button to show the time. It was wrapped in 18-carat gold and cost $2,1002.
In 1982, Pulsar released the NL C01, which could store 24 digits, making it the first watch with user-programmable memory2.
In 1983, Seiko launched the Data 2000, which came with an external keyboard for data-entry. It could store memos, calendar entries and act as a calculator. Data was synced from the keyboard to the watch via electro-magnetic coupling2.

In 1984, Seiko also released the TV Watch, which could display TV images with an adapter and a receiver box. It was worn by James Bond in Octopussy2.

Development Years (1985-2010)
In 1985, Sinclair and Timex developed the FM Wristwatch Radio, which had three sections: an LCD watch, a speaker and an FM tuner. It was canceled due to financial problems2.

In 1995, Seiko introduced the MessageWatch, which could display caller IDs, sports scores, stock prices and weather forecasts using FM sideband frequencies2.

In 1998, an independent developer named Steve Mann created the Linux Wristwatch, which ran Linux OS and had a QWERTY keyboard and a touchpad. It could connect to the internet and run various applications3.

In 2003, Microsoft launched the SPOT (Smart Personal Objects Technology), which used FM radio signals to deliver information such as news, weather and traffic to smartwatches made by Fossil, Suunto and others4.

In 2004, Samsung released the SPH-WP10, which was the first watch phone that could make and receive calls. It had a speaker, a microphone and an antenna5.
In 2009, Sony Ericsson launched the LiveView, which was a Bluetooth device that could display notifications from an Android phone on a 1.3-inch OLED screen5.

Modern Years (2011-present)
In 2011, Motorola released the Motoactv, which was a fitness tracker and music player that could sync with Android phones. It had GPS, Wi-Fi and Bluetooth5.
In 2012, Pebble launched a Kickstarter campaign for its Pebble Smartwatch, which raised over $10 million. It had an e-paper display, a long battery life and could run various apps5.

In 2013, Samsung unveiled the Galaxy Gear, which had a camera, a speaker, a microphone and could make calls, take photos and run apps. It was compatible with Samsung smartphones5.
In 2014, Google announced Android Wear, an operating system for smartwatches that supported voice commands, notifications and Google Now. LG and Motorola released the first Android Wear devices: the LG G Watch and the Moto 3605.

In 2015, Apple launched the Apple Watch, which had a touchscreen, a digital crown, a heart rate sensor and various features such as Apple Pay, Siri and Fitness. It worked with iPhones5.
In 2016, Fitbit acquired Pebble and released the Fitbit Blaze, which was a fitness-focused smartwatch that could track steps, calories, heart rate and sleep. It also had notifications and music control5.

In 2017, Samsung introduced the Gear S3, which had a rotating bezel, GPS, NFC and wireless charging. It ran on Tizen OS and worked with Android and iOS phones5.
In 2018, Apple released the Apple Watch Series 4, which had a larger screen, an ECG sensor, a fall detection feature and improved performance. It also had watchOS 5, which added new features such as Walkie-Talkie, Podcasts and Siri Shortcuts5.

In 2019, Huawei launched the Huawei Watch GT 2, which had a 1.39-inch AMOLED screen, a Kirin A1 chip, a two-week battery life and various health and fitness features. It supported Bluetooth calls and music playback5.
In 2020, Samsung released the Galaxy Watch 3, which had a thinner and lighter design, a blood pressure monitor, an SpO2 sensor and a fall detection feature. It also had Bixby, Samsung Pay and various watch faces5.

In 2021, Apple launched the Apple Watch Series 7, which had a larger and more durable screen, a faster charging system, a full keyboard and new watch faces. It also had watchOS 8, which added new features such as Focus mode,  Mindfulness app and Portrait watch face5.
In 2022, Google and Samsung announced Wear OS 3, a unified operating system for smartwatches that combined the best of Android Wear and Tizen. It supported Google Assistant, Google Pay, Google Maps and various apps. Samsung released the Galaxy Watch 4 and the Galaxy Watch 4 Classic, which were the first devices to run on Wear OS 35.
In 2023, Fitbit released the Fitbit Sense 2, which had a sleek design, a color AMOLED screen, an EDA sensor, an ECG sensor and a temperature sensor. It also had Fitbit Premium, which offered personalized insights, guidance and coaching5.

 Conclusion :-
Smartwatches have come a long way from being simple timepieces to being powerful computers that can do almost anything. They have become more stylish, functional and intelligent over the years. They have also become more popular among consumers who want to stay connected, informed and healthy. Smartwatches are expected to continue to evolve and innovate in the future, offering new features, capabilities and experiences.