Unlike GTR, Xiaomi has added tp GTR 2 a microphone and loudspeaker in addition to 4GB music storage out of which 3GB is available and allows you to store music on the GTR 2 which you can listen while working out or just recreating. Music Storage with Loudspeaker and Microphone Added.GTR 2 tracks your heart rate continuously and is able to automatically detect atrial fibrillation and arrhythmia GTR 2 has 12 preloaded workout modes that allow you to choose your preferred workout mode, although not so many when compared to Versa 2 with 20 and Active 2 with 39 preset workout modes. Personal Assessment Index has also been added, this feature measures your overall well being by converting complex information such as heart rate data, activity duration, and other health data into a numerical value through an algorithm. SpO2 blood oxygen tracking has been added which allows you to track your blood oxygen levels to help you see how well your blood absorbs oxygen. GTR 2 is fitness-focused and as such it’s equipped with an accelerometer, heart rate monitor, inbuilt GPS, gyroscope, and geomagnetic sensors that enable it to track your daily activities such as steps, distance, sleep, calories, heart rate, and many more. With a 46mm case size, the GTR 2 isn’t very compact, but it’s very slim at 10.7mm. There are lots of watch faces to choose from and you can also make your personal photo the watch face. The 1.39 inches AMOLED powered display is very colorful and vivid, while navigation is via touchscreen support and two physical buttons. It comes in two materials aluminum and stainless steel, while the 22mm interchangeable bands come in silicone and leather respectively. The GTR 2 has an attractive and sturdy design that is slim and also very lightweight.
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NOTE: We can't guarantee that all the information on this table are 100% correct.