Best Thinnest Smartwatches of 2021 – Slimmest Lightweight Collection

Thinnest smartwatches were unheard of until recently, when most people began looking for ultra-thin models. The industry is growing quite fast, and significant smartwatch manufacturers have begun producing these models. As a result, it’s becoming increasingly difficult to distinguish which models make the best thinnest smartwatches to buy.

We have updated our list of Best Smartwatch for Texting Dec, 2022

We monthly buy products and test all the Smartwatch brands. During the last 12 months, a couple of Top smartwatch brands on the list have lost their position. We have updated our list of Best Smartwatch for Texting for Dec, 2022, Please have a look. If you are looking for the Best Smartwatches for Teenagers or kids then you may have a look into this article Best Smartwatches for Teens and smartwatches for kids before buying a good and suitable smartwatch.

For most smartwatch users, buying the slimmest smartwatch is all they want. Lucky for them, this post gives you all you need to make an order for the minimalist watch, which has proven to be thin and reliable in many ways. The products we’ve listed here are carefully selected to make sure you get to invest in the perfect smartwatch for your money.

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Why should You wear a Slim Smartwatch?

Slim smartwatches are the current and trending style emerging today. The construction of these ultra-thin watches expresses something most people have been looking for for the longest time. 

The best part is that the ultra-thin design also makes the smartwatches lightweight, which benefits the wearer. It will feel like you’re not wearing anything on your wrist while ensuring the best comfort. 

And if you’re looking for a minimalist smartwatch that is unrestrained on your wrist, you will want to consider it while retaining the organic smartwatch design. And, as you can imagine, compacting everything into a slim smartwatch is a challenge. 

What’s more, the minimalist design, when combined with a metallic shade, can help express a luxurious, something that can fit into any style you wear. It’s something that you can wear with almost anything in your closet. 

Do you think that’s something you’d be interested in? If you are, then you have to read more. This post is for you.

List of The Best Thinnest Smartwatches

1. Pebble Time Round – Considered World's Lightest and Thinnest Smartwatch

We start the list with the Pebble Time Round Smartwatch, which has been rated as the world’s lightest and thinnest smartwatch by its previous customers. It brings you the many easy-to-use and time-saving features pioneered by the company to define the smartwatch category as a slimmer, lighter model. It’s something most people would want to have, no matter what. It’s ultra-thin, narrow, and light at the same time.

And the best part is, it does have all the features you get from a reliable, convenient smartwatch. The slim leather or silver band makes everything look sleek. You might want to suit it with downloadable watch faces that you can use to personalize the smartwatch to make it your own. You can now match your mood and appearance. You can also add some apps to suit your life.

And because the Pebble Time Round watch is splash resistant, you can wear it in a rainstorm with ease. The construction and other features are also outstanding, as reported by the reviewers. It comes with a battery that lasts for a day, even with its bright e-paper always-on display.

It gets even better; you can check your phone notifications, including incoming calls, calendars, and texts. Now you can jog, run, or even take a nature walk without carrying your phone. Everything you might need will be on your wrist.

Features & Pros

  • Quick-change bands to match your style
  • Downloadable watch-face designs for personalization
  • Compatible with iPhone and Android
  • Built-in activity and sleep tracker
  • Easy-to-read, always-on the screen
  • Super-fast charging


  • Limited apps in the Pebble app store
  • Splash resistant but not waterproof

2. Garmin Vívoactive Smartwatch - Best Lightweight, Customizable Smartwatch

The Garmin Vivoactive Black is another watch that has established itself as one of the best and thinnest smartwatches on the market. Its display can be described as ultra-thin, featuring a 1.4-inch screen with a high resolution. You need not worry about not being able to read the time in the sunlight.

What’s more, it is even easier to use and maneuver between apps with the touchscreen display. This smartwatch is an ideal fitness companion as well, thanks to its built-in sports app, including GPS-enabled golf, biking, and running. For a more personalized look, you can conveniently customize the watch faces with those that fit your style.

Additionally, this watch boasts decent battery life on a single charge- up to 3 weeks in watch tracking mode. It ensures that you do not miss out on any crucial texts and calls with smartphone compatibility. It’s a model that gives you the convenience of a mobile phone right on your wrist.

Also, the manufacturer had your health in mind with the included workout apps. This watch has an ultra-thin 8mm profile and is lightweight, offering you a comfortable wearing experience. The package consists of additional bands that you can swap out to fit your style and color.


  • Advanced smartwatch features
  • Customizable apps and watch faces
  • Built-in GPS-enabled sports apps
  • Compatible with smartphones
  • Ultra-thin and lightweight
  • Long battery life


  • There is no hiking app
  • It is hard to set up

3. Withings Steel HR – Best Hybrid Thin Smartwatch

The Withings brand has achieved a remarkable feat with thin watches, with their Withings Steel HR Hybrid smartwatch being the thinnest Android watch. It is not only thin and lightweight, but also comes feature-packed with all you could need for a smartwatch.

First, it has a workout mode that, when activated, uses the connected GPS, continuous heart rate, and timer to track your sports and workout activities. Moreover, you can stay with this watch for over 20 days on a single charge- more time moving, less time charging! Its previous customers continuously shower it with praise for its accurate daily activity tracking and accurate sleep monitoring.

Furthermore, you can connect this watch to your smartphone to stay updated on all of your events, calls, texts, and any other apps of your choice. A gentle vibration will notify you. Besides being your workout companion, this smartwatch is water-resistant to 50m, allowing you to go swimming, take showers, or withstand a downpour with it.

You might want to know that the watch is Alexa compatible; you can use it to control your smart appliances at home. What’s more, it is designed to sync with the Health Mate app through Bluetooth seamlessly. Convenience is something most people praise, considering you can do almost anything your phone can do, right from your wrist.

You also get to choose from multiple bands which suit your style. That means you can match your closet with these brands. And since it’s a slim watch, its profile allows it to go with almost every style you might have. So, you can use it for formal or casual occasions.


  • Daily activity tracking
  • Swappable wrist bands
  • Automatic sleep tracking
  • Multisport & Heart Rate Tracking
  • Extended battery life
  • Smart notifications


  • Workout mode is not customizable 
  • Sleep tracking is not very accurate 
  • It is not a great fitness watch

4. LG Electronics LGW270.AUSAPG Smartwatch – Best for Classy Luxurious Look

Aesthetics meets comfort and convenience with the LG Electronics smartwatch. This slim smartwatch for ladies has a classic design to achieve a great chic look. Moreover, it is conveniently lightweight for an unparalleled wearing experience.

According to its previous users, the LG Electronics LGW270 is something you can use with almost anything in your closet. It comes in titanium, rose gold, and silver exteriors- all neutral colors can blend into any style.

Under these exteriors is a ground-breaking innovation that makes this watch stand out from its competitors. You can swap out multiple bands for one that meets your preferences. Furthermore, you can easily set up this smartwatch with Wi-Fi or Bluetooth.

Moreover, you can pair your smartphone with this watch, IOS and Android alike, so you can always stay in the know. The thinnest Wear OS watch that is accompanied by Google voice activation makes its operation even more straightforward.

Besides that, this lady’s lightweight smartwatch comes fitted with a water and dust-resistant frame that gives it impressive long-term durability. And since it’s made by a renowned brand, you can expect it to be very reliable.


  • A capacity of 16500mAh, and a weight of 1.16 pounds with dimensions of 6.3x3x1.6 inches
  • Amperage of 600 A, 12 volts maximum power output, and a lithium-ion battery is required for use
  • A soft rubber surface with upgraded clamps, and made of fire-resistant materials
  • Can last up to 5 hours on a single charge, and can still operate in temperatures from -20C to +60C
  • A female cigarette lighter adapter is attached to the device
  • An input of 15V/1A, with an output of 12V/10A


  • Compatible with both IOS and Android
  • IP67 rating for dust and water resistance
  • High-quality leather band
  • Built-in Google assistant


  • It has limited smartwatch features.
  • It is not entirely waterproof.

5. Ticwatch GTX – Best Thinnest Smartwatch for Music Lovers

If you are looking for an ultra-thin and lightweight smartwatch, you should consider the Ticwatch GTX Fitness Smartwatch. It’s designed to suit all users and comes with everything you might be looking for in a budget-friendly smartwatch.

It boasts a long battery life of up to 7 days on a single charge, allowing you to enjoy extended use without worrying about a low battery. Other than this, this model has an IP68 waterproof rating, something you will appreciate if you’re searching for a smartwatch you can use when swimming.

Moreover, this watch was designed with your health and fitness in mind. It comes with 14 sports modes with a fitness tracker, heart rate monitor, and steps and calories counter. This way, you can set your fitness goals and work to achieve them with the help of your smartwatch.

This lightweight smartwatch enables smart notifications so you can never miss any critical texts, calls, and third-party app notifications. Also, there is an automatic sleep tracker, so you can monitor your sleep duration and quality and make the necessary adjustments to your routine. You can now listen to your favorite playlists from the comfort of your wrist thanks to music control.


  • Smart sleep tracking and heart rate monitoring
  • Activity tracking and sports modes
  • IP68 waterproof and swim-ready
  • Enables smart notifications
  • Comfortable and stylish
  • Long battery life


  • It has some notable software issues.


Which is the Thinnest and Most Lightweight Smartwatch? 

The Pebble Time Round has been reviewed as the world’s thinnest and lightest smartwatch. This slim smartwatch offers you a comfortable wearing experience that can not be matched by any other. You will hardly feel it on your wrist – it weighs only 28 grams with a thickness of 7.5mm. As a minimalist watch, Pebble Time Round comes equipped with smartwatch features, so you can enjoy all the convenience of the slimmest smartwatch. It is among the best and thinnest smartwatches you can buy today, especially when working with a limited budget.

What is considered a Thin Watch?

The efforts by watch manufacturers to design thin watches have borne fruits in recent years, with the thinnest mechanical watch being 2mm, the smallest smartwatch ever. It is unclear what makes a watch ultra-thin and which ones fit the description, but generally, some thin watches have been recorded at 9mm width, with others even less. For a watch to be called thin, it should have a super slim design and be lightweight. There are many such watches, as explained above.

Final Verdict on Choosing The Best Thinnest Smartwatch

Most smartwatch users get the most lightweight watch for their wrists with everything a smartwatch can offer. And, as you can see from the list above, the perfection of these models makes them the ideal timepiece you may have been looking for for a long, long, long, long time. You should find something that you can wear on your wrist and feel more comfortable and lighter than the items on the shortlist.