Specifications:

• Screen Size: 1.43 inch
• Screen Type: AMOLED
• Resolution: 466x466
• Microphone Commands: Calls & Voice 
• Speaker: Yes
• Battery Life (Typical use): 14 days
• Waterproof Rating: 5 ATM
• Google, Alexa support: Yes
• GPS: Yes
• WiFi: Yes
• Large 1.43" HD AMOLED Display: The Amazfit GTR 4 smart watch is the industry's first smartwatch with anti-glare technology on the glass bezel cover, and the AMOLED display has an anti-fingerprint coating to keep your watch looking pristine. Turn your smartwatch into your personal health and fitness dashboard, and see the data that's vital to you in HD clarity.
  
• Super Strong & Accurate GPS Tracking: The Amazfit GTR 4 outdoor GPS watch uses industry-leading dual-band circularly-polarized GPS antenna technology, for stronger positioning that's 99% as accurate as top handheld GPS locators. Whether you're hiking a tree-covered trail or cycling to work through a congested city center, enjoy positioning that's unimpeded by environmental and multi-path interference. You can even import a route file to the watch from the Zepp App and navigate your way along it in real-time.
  
• Smart Recognition of Strength Training Exercises: The Amazfit GTR 4 sports watch can automatically recognize the movements and count the reps of dozens of strength training exercises, many of which have adjustable variations in the Zepp App, as well as track your rest time between sets. After your workout, the Zepp App will show you the muscle group you exercised and how long you exercised it for, to help keep your training efficient.
  
• Ultra-long 14-day Battery Life: Crush your professional and workout goals for up to two weeks at a time. Primed for action, the battery of the Amazfit GTR 4 smart watch packs a 475 mAh rated value, and the watch's new Battery Saver Mode even enables continued use of features like sports modes, measurement of health metrics, and more, all while saving power.
  
• Easy 24/7 Health Management : Enjoy highly-accurate 24-hour monitoring of heart rate, blood-oxygen saturation and stress levels. The GTR 4 fitness watch can also detect your breathing rate, and is able to quickly measure these four important health metrics in one easy tap.