Pebble Cosmos Grande Review: 2.1-Inch Largest Display Ever

In this blog, we will talk about the Pebble Cosmos Grande smartwatch.

This smartwatch has been launched with a 2.1-inch display, which makes it the largest display smartwatch.

However, it also offers features such as wireless charging and GPS trajectory, which increases curiosity about it.

In this particular Pebble Cosmos Grande review, we’ll take a closer look at all its features and shortcomings and see if it justifies its price tag.

Pebble Cosmos Grande Smartwatch Review

Pebble Cosmos Grande Smartwatch

Bottom Line

The Pebble Cosmos Grande offers the convenience of in-app GPS support and calling capabilities, all while maintaining a large display.

While the lack of an AMOLED display may be a drawback for some, those who prioritize attractive design and a large display may find the Pebble Cosmos Grande to be the best option for them.


  • Largest display ever
  • Attractive premium design
  • Digital crown button
  • Decent calling experience
  • Wireless charging


  • No AMOLED display
  • IP67 water resistant

Pebble Cosmos Grande Specs

Resolution480×546 px
AMOLED displayNo
Sports modes10+
Watch faces100+
Voice assistantYes
Heart rate monitoringYes
Spo2 monitoringYes
Blood pressure monitoringYes
Step counterYes
Bluetooth callingYes
In-built GPSNo
Quick replyNo
Emoji supportNo
Wake gestureYes
Always-on displayNo
In-built gamesNo
Camera controlYes
Music controlYes
Battery lifeUp to 5 days

Design & Build Quality

The design of the Pebble Cosmos Grande smartwatch looks quite premium.

A crown button, a function button, and a mic are seen on one side of the smartwatch while the speaker is on the other side.

At the same time, the backside is equipped with sensors that are given for health monitoring.

Pebble Cosmos Grande Design Overview

The interesting thing is that its crown button is working, with this you can change watch faces and also scroll through the content of the smartwatch.

In terms of build quality, the company has used a metallic chrome finish, which gives it solid build quality, and at first glance, it looks like a premium expensive smartwatch.

Also, the quality of the strap is very good, you can also replace it with another sliding strap.

To sum up, the Pebble Cosmos Grande certainly lives up to expectations in terms of design and build quality.

Display & UI

The most attractive aspect of the Pebble Cosmos Grande is its display.

You get to see the largest ever display of 2.1-inch which has the best-in-segment resolution of 480×546 px.

Pebble Cosmos Grande Display

While the display is certainly of high quality, the lack of an AMOLED display may be a disappointment for some, especially considering the fact that this smartwatch falls in the premium price range where other smartwatches like the Fire-Boltt Visionary offer AMOLED displays.

Its wake gestures also work well and having a peak brightness of 600 nits makes it very easy to use outdoors.

I found the user interface on the Pebble Cosmos Grande to be decent, but not particularly smooth.

While many smartwatches in this budget range offer a decent UI, the user experience on the Pebble Cosmos Grande is enhanced by its large display.

So overall, the Pebble Cosmos Grande sports a massive display which is a perfect option for thick wrists.

Watch Faces

Pebble smartwatches are known for attractive designs and stylish watch faces.

In Pebble Cosmos Grande, you get to see more than 100 cloud-based watch faces which you will be able to download through its companion app.

At the same time, it has a selection of built-in watch faces that can be changed by tapping and holding on the screen or using the crown button.

Overall, the Pebble Cosmos Grande allows you to achieve a new look every day, and also, you can set a custom watch face.

Bluetooth Calling & Notifications

The Pebble Cosmos Grande is a Bluetooth calling smartwatch.

In this, you get to see the built-in mic and speakers which we have already talked about in the design section.

This smartwatch offers you the option of a quick access dial pad, recent call history, and sync contacts.

However, one limitation of the Pebble Cosmos Grande is that it does not allow you to transfer calls during a call, which can be frustrating.

Pebble Cosmos Grande Bluetooth Calling

In terms of notifications, Pebble Cosmos Grande performs well, giving you the feature of quick notifications and also allowing you to decide which apps you want to receive notifications from.

Unfortunately, you can’t reply to calls or notifications.

Health Monitoring

The Pebble Cosmos Grande smartwatch offers you a heart rate monitor, blood oxygen monitor, sleep monitor, stress monitor, and blood pressure monitor.

All these parameters work with descent accuracy but sometimes inaccuracy can also be seen.

In short, the Pebble Cosmos Grande performs well when it comes to health monitoring but you shouldn’t rely on its data for medical conditions.

Sports Modes

The Pebble Cosmos Grande smartwatch offers only about 10 sports modes, which may not be sufficient for sports enthusiasts.

One feature that may make this smartwatch an appealing choice for athletes who participate in outdoor sports like running and cycling is its in-app GPS support, which allows you to track your route.

However, if you are interested in built-in GPS, you can consider these best smartwatches with GPS.

Apart from this, it gets IP67 water resistant which can protect it from water splash but does not allow swimming or using it for a long time in the water.

While the available sports modes, such as running, cycling, and climbing, perform well, the Pebble Cosmos Grande also provides in-depth reports on these activities.

Battery Life & Charging

The Pebble Cosmos Grande provides around 3 to 4 days of battery life in typical usage while it can last only a day on heavy usage.

Now its battery backup is not that impressive but it supports wireless charging which makes it quite interesting.

App Functionalities

You will need the RDFit app to connect the Pebble Cosmos Grande smartwatch to your phone.

Pebble Cosmos Grande App

This app shows you the report of step counts as well as other parameters like sleep, exercise, heart rate, blood oxygen, etc. on the home page.

In the Device tab of the RDFit app, you can access the settings for the smartwatch, including the watch face market, notification settings, and reminders.

Overall, the app has a user-friendly interface and provides all the necessary options.

Other Features

Additionally, the Pebble Cosmos Grande features a built-in calculator, which may be useful for students.

By swiping right, you can enable the sidebar on the Pebble Cosmos Grande smartwatch, which provides access to all recent apps.

This is a useful feature that is also available on budget smartwatches like the Fire-Boltt Ring Pro.

Who Should Consider And Who Shouldn’t

If having a large display is the most important factor for you, then the Pebble Cosmos Grande may be the right choice for you.

However, if you have a thin wrist or are looking for other specific features in a smartwatch, you may want to consider alternative options.

In this guide, I have compiled a list of top smartwatches for thin wrists that you can review.

More Options to Consider:

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