Amazfit GTR 47mm Aluminium Alloy Smart Watch is comes with Global Version with Metal and Ceramic Elegant Design, 326 PPI AMOLED Display, Powerful Battery Life, 5 ATM Water Resistant and 12 Sports Modes. This smart watch is built with Delicate and elegant and classic design back. This smart watch has BioTracker PPG biological tracking optical sensor, 6-axis acceleration sensor, 3-axis geomagnetic sensor, Air-pressure sensor, Capacity sensor, Ambient light sensor, Large 326 PPI AMOLED Display with Elegant Watch Faces. Outstanding and more Comfortable Viewing Experience that provides a great variety of original interfaces, making your Amazfit GTR a seamless work of art. This smart watch has A Revolutionary Battery Life of 24 Days and enhanced circuit design, a deep-in power optimization and power consumption management, enable the Amazfit GTR to perform perfectly for over three weeks. The Amazfit GTR 47mm is built with Water Resistant up to 5 ATM and High-precision GPS and also best Companion for Mountain Climbing or Swimming. with traditional high-end watches, so you have nothing to worry when wearing it in daily life or swimming. Moreover, the high-precision GPS positioning system is continuously optimized to provide rich exercise data for your outdoor exercise. This stylish smart watch has 2 sports modes, from daily activities such as walking, running or swimming, to climbing and skiing, so you’ll be able to learn about your exercise status and improve overtime. The Amazfit GTR 47mm integrated with the BioTrackerTM PPG biological tracking optical sensor and an algorithm developed by Huami, offers advanced full-scale heart-rate monitoring. This smart watch will quietly count your steps and the volume of your exercise all day long. When you fall asleep, it will record your sleep condition in detail, and allows you to remotely control the music playing on your mobile for a hands free exercise experience. It not only provides a 24-hour ceaseless high-precision heart-rate monitoring, but also provides functions such as vibration alerts on heart rate much too high or out of heart rate range while exercising, and recording and viewing fat-burning range, making exercise more scientific and healthy. This smart watch has 24 days Typical usage scenario, 74 days Basic watch mode, 40 hours GPS continuously on.