MaxTrack: Industry-leading GPS Technology: Amazfit's dual-band circularly-polarized GPS antenna technology, named MaxTrack, enables this GPS smartwatch to pick up almost 100 percent of satellite signals. This technology reduces multi-path interference in order to track your position with the maximum amount of accuracy, even if you're running in dense cities with tall buildings or parks with high trees. Personalized AI-powered Running Coach: The Zepp Coach harnesses the power of AI to provide personalized running plans, which are generated based on your current level, target race type and date, and your goal for the race. To help you build up to race day in the ideal condition, Zepp Coach will intelligently adjust your plan every week based on your performance, and provide scientific guidance as you progress. Precise Route Navigation and Offline Maps: With this sport watch, you'll always know where to run. Download a color map of the area you plan to run from the Zepp App and import it to the watch, to enjoy a detailed understanding of your surroundings. Pair the map with a matching imported route file and navigate with incredible precision as you run. Advanced 24/7 Health and Fitness Data: The BioTracker PPG optical sensor enables highly-accurate monitoring of your heart rate, blood-oxygen, stress level and sleep quality. Connect to a heart rate belt when you go running, thanks to the powerful Bluetooth connectivity of the health-centered Zepp OS 2.0. Streamlined and Lightweight Design: Engineered for runners, the Amazfit Cheetah smart watch is built from durable fiber-reinforced polymer. The super lightweight design weighs only 32g and features a responsive crown and button for easy control while running, while the bright and clear HD AMOLED display is easy to read wherever you like to run.Ultra Long Battery Life: Enjoy up to 14 days of battery life with typical usage, or even up to 45 days in Clock Mode.