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Amazfit GTR 4 features and specifications

• Notification Support: iOS, Android
• Operating System: Zepp OS 2.0
• Display Size: 1.43 inches
• Case Material: Aluminum
• Water Rating: 5 ATM
• Display: AMOLED
• Storage: 2.3GB
• Battery: 475 mAh
• Connectivity: 2.4GHz Wi-Fi; Bluetooth 5.0 & BLE
• Health sensors: BioTracker 4.0 PPG biometric sensor (supports blood-oxygen, 4PD + 2LED)

Amazfit T-Rex 2 Features

• Rugged style: The bold look of the Amazfit T-Rex 2 is inspired by the spirit of nature. The watch’s matte finish and metal-sprayed outer bezel are also complemented by a sweat-wicking silicone strap that keeps the watch dry and comfortable as you brave the elements.
• Super-tough: It’s tough enough to endure temperatures as low as -30°c and, with 10 ATM water resistance, it can withstand 100 meters’ water pressure too.
• Clear HD AMOLED display: The large 1.39” screen is visible even under bright sunlight for easy reading in all conditions.
• Pick a watch face to suit: Choose from a wide variety of watch faces, and even upload your own photo.
• Next-level fitness partner: With over 150 built-in sports modes to suit your choice of activity, the watch can track metrics like heart rate, calories burned, and more. It can also intelligently recognize your motions and begin recording related sports data, as soon as you begin any of these eight sports: Outdoor Running, Treadmill, Walking, Indoor Walking, Outdoor Cycling, Pool Swimming, Rowing Machine, and Elliptical.