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The Amazfit GTR 4 uses industry-leading dual-band circularly-polarized GPS antenna technology so you can enjoy stronger positioning that’s 99percent as accurate as top handheld GPS locators. The Amazfit GTR 4 is the industry’s first smartwatch with anti-glare technology on the glass bezel cover and the large 1.43AMOLED display has an anti-fingerprint coating to keep your watch looking pristine. Get down to business with a huge selection of over 150 sports modes and support smart recognition of 8 Sports. The Amazfit GTR 4 smartwatch debuts the new BioTracker 4.0 PPG biometric sensor you can enjoy more accurate 24-hour monitoring of heart rate blood-oxygen saturation and stress levels. Crush your professional and workout goals for up to two weeks at a time! The Ultimate Personal Assistant with Amazon Alexa Built-in and support Offline Voice Assistant.