Reviews You Can Rely On

How We Tested Smartwatches

Tuesday January 24, 2023
smartwatch - scrolling through contacts before making a call right from our wrist.
Scrolling through contacts before making a call right from our wrist.
Credit: Laura Casner

How do we test smartwatches? We spend hundreds of hours doing extensive research, reading through manufacturer specifications, and comparing user experiences with different models to pick the most promising smartwatches available. From there, we purchase the top models and put them through extensive side-by-side testing, which we split into five metrics, weighted according to importance. We combined individual test results for an overall score within each metric, which helped us identify specific areas where some wearables shine, and others fail. The combined metrics determined the final scores for each device and the winners in our battle for the best smartwatch.

Smart Function

The first set of tests we performed made up our smart functions metric, and 30% of each product's final score. For our first test, we assessed the availability and compatibility of popular apps. We attempted to install and use Uber, Messenger, Spotify, Strava, IFTTT, Evernote, Shazam, Twitterrific, Instagram, and Pandora on each device. The popular app test really distinguished smart wearables intended for everyday convenience from those that were less smart and tailored specifically to fitness tracking.

smartwatch - the galaxy watch 5 has access to the google play store.
The Galaxy Watch 5 has access to the Google Play store.
Credit: Abriah Wofford

Next, we looked at whether or not these products could receive phone calls. Whether a wearable allows the user to answer a call, or if it just alerts the user to an incoming phone call, varied from device to device. The range of support included everything from just notifying the user of a phone call on their wrist (with the call then having to be picked up on a phone) to some devices allowing users to go through the call log and even dial out from their smartwatch.

We compared and evaluated the ability of each watch to control music. We explored music controls to see if they allowed users to play, stop, pause, skip, adjust volume, and even whether or not they supported thumbs up and thumbs down interactions.

With a growing number of payment processors and locations accepting wireless payment support from mobile devices, commonly referred to by the acronym NFC, we tested support for making payments from each wearable. We awarded points for the ability of each device to allow you to pay for things using wireless payment methods like Apple Pay, Google Pay, or Samsung Pay.

smartwatch - an incredible amount of smart apps and features enhance life on the...
An incredible amount of smart apps and features enhance life on the go.
Credit: Abriah Wofford

The last evaluation of smart functions we made looked at the cellular capabilities of each device. Standalone cellular capabilities allow users to leave the phone behind whilst keeping the ability for apps on the wearable to use data and take or make phone calls.

smartwatch - smart features like google assistant are always a welcomed addition.
Smart features like Google Assistant are always a welcomed addition.
Credit: Abriah Wofford


Next we moved on to our health metric, which compared and scored the fitness tracking and monitoring features each watch offered, making up 20% of the final score of each device.

smartwatch - no other smartwatch can compete with the series 8 in terms of health...
No other smartwatch can compete with the Series 8 in terms of health and fitness capabilities.
Credit: Abriah Wofford

Individual tests within the metric included testing the accuracy of the step counter, determined by comparing the count shown on each watch to our manual count collected on a mile-long walk. We also tested the accuracy of heart rate monitoring against a chest strap monitor. We captured data both during rest and during a range of exercises.

Finally, we compared the ability of each watch to track various workouts, such as the number of preset profiles that were available. We also looked at safety and other additional health features.

smartwatch - there are a lot of workout tracking options with the ticwatch pro 3.
There are a lot of workout tracking options with the TicWatch Pro 3.
Credit: Abriah Wofford


Our third test metric evaluated battery performance and comprised 20% of each product's overall score. Here we tested the actual battery life of each device under normal use by sending various calls and notifications to each watch at timed intervals. We also tested the charging performance by measuring the time it took each device to charge to 25%, 50%, 75%, and full charge.

smartwatch - there is no better battery life for a higher-end watch than the...
There is no better battery life for a higher-end watch than the TicWatch Pro 3.
Credit: Abriah Wofford

Ease of Use

Our next test metric rated and ranked the user-friendliness of each wearable, comprising 15% of each product's final score. The metric tested the device's water resistance, charging setup, whether or not devices utilize a crown or bezel scroll, and screen responsiveness.

We first rated the water resistance of each device. A watch that has to be removed before a shower, doing a sink full of dishes, or a pool workout is neither user-friendly nor is it great for fitness tracking. The best of the devices remained water-resistant to 50-meter depths, and the worst were only splashproof.

All the devices we tested consume power and need to be recharged somewhat frequently. We tested the user-friendliness of each wearable's charging setup, scoring each one based on the strength of the connection to its charger, as well as how easy it is to connect to the charger.

smartwatch - the charging setup for this wearable is straightforward - simply...
The charging setup for this wearable is straightforward - simply place it on the charging station.
Credit: Abriah Wofford

Our next test rated the presence and performance of a crown or bezel and the ability to use the crown or bezel to navigate or scroll through screens and apps.

smartwatch - crown scrolls are a helpful feature, making navigation through...
Crown scrolls are a helpful feature, making navigation through applications simple.
Credit: Abriah Wofford

For our last test, we looked at screen responsiveness. We observed the time it took for a device to respond to the turn of a wrist, as well as the snappiness of the touch screen in responding to touching and swiping.

smartwatch - the touchscreen on the ticwatch is very responsive and easy to use.
The touchscreen on the TicWatch is very responsive and easy to use.
Credit: Laura Casner


Our last metric evaluated the display on each device and contributed 15% of the final score. We evaluated and scored screen quality, readability in different levels of both bright or dark light, auto brightness adjustment and performance, and whether or not each device had an always-on setting.

The first and most important test of the display metric was screen quality. To evaluate this, we looked at the size of the screen, its type, and its pixel density. We also did a side-by-side test with the same image shown to a panel of observers that rated which models simply looked the best. Next, we compared how easy it was to read the screens in bright and dark conditions. Finally, we gave points for models that had an auto-brightness feature or an always-on feature.

smartwatch - a great display can give a top-tier smartwatch a competitive edge.
A great display can give a top-tier smartwatch a competitive edge.
Credit: Abriah Wofford


Picking the right smartwatch can be difficult, so we designed our five-metric scoring system and extensive individual tests and evaluations within each of those metrics to help. If you are interested in seeing how each model we tested performed in our tests, then take a look at the results of our comprehensive smartwatch review.

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GearLab is founded on the principle of honest, objective, reviews. Our experts test thousands of products each year using thoughtful test plans that bring out key performance differences between competing products. And, to assure complete independence, we buy all the products we test ourselves. No cherry-picked units sent by manufacturers. No sponsored content. No ads. Just real, honest, side-by-side testing and comparison.

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