Amazfit GTS 4 Smartwatch review – Flawed beauty

The GTS 4 supports the tracking of over 150 different kinds of sports. The user can customize each sport individually on the smartwatch. Furthermore, the GTS 4 offers additional functions for various types of sports so that the training can begin with a particular goal such as training effect, distance, time or calories burned. 

As well as this, the smartwatch can sound training alarms if a specific heart rate or step length is either below or above the intended target. It is also possible to receive a training status after a certain distance or time with the smartwatch providing information regarding the current heart rate, distance covered and average speed. 

Amazfit also advertizes that the GTS 4 can automatically recognize eight different types of sports and begin recording data. The supported sports include walking, cycling as well as swimming or exercising with a rowing machine or cross-trainer.  

Unfortunately, the automatic recognition is noticeably late. When hiking, this can be around 30 minutes and 3 kilometers. Also when cycling in the city, the smartwatch usually starts recording when the destination has been reached. In tests, the Amazfit GTR 4 worked considerably better and other manufacturer models such as the Fitbit Sense 2 or a Samsung Galaxy Watch5 were significantly more reliable.  

The gathered training data can be tracked retrospectively either on the smartwatch itself or by using the Zepp app. The software provides infos concerning the training time, average pulse, average speed, maximum speed and altitude gain or loss. Heart rate and speed are even represented graphically. Depending on the type of sport, additional information is provided such as step length. 

The pulse area is divided into different zones by the Zepp-App. In addition, the smartwatch estimates the training effect and recommends breaks, if required. When training outdoors, the smartwatch records the covered route. The routes can be exported as a GPX file. Importing routes is also possible and the GTS supports GPX, TCX and KML files. These routes can be completed after importing them into the Zepp app’s sports section.

Apparently, the GTS 4 can identify strength training and also analyze how it is affecting certain muscle groups, although we didn’t try this feature during testing. Likewise, we also didn’t complete any track-based training. The Amazfit watch also offers interval training plans for individual sports.