Upgraded all-round sleep monitoring*Linear motor for better haptic feedback1.74'' narrow-edge quadrilateral display with 2.5D cover glassUp to 21 days of battery life*1200 nits HBM brightness60Hz high refresh rateAutomatic brightness adjustment2.5D cover glass An unmatched tactile experienceRich assortment of new watch faces Additional functionalities availableLeather strap Masterfully crafted magnetic strap. TPU strap  Your ultimate workout partner. The soft, comfortable, skin-friendly strap is sweat and weather-resistant.Upgraded AFE chip. More accurate measurement of heart rate and blood oxygen levelsExperience Comprehensive upgrades New experiences5ATM water resistance- Supports a wide range of water sports and recognition of swimming posture.New linear motor Comfortable vibrations- Featuring a range of crisper, subtler and more comfortable vibration modes.1.74'' narrow-edge quadrilateral display, High quality metal frame with new straps Comprehensively enhanced user experience, Up to 21-day ultra-long battery life Multi-dimensional health management, Professional Workout Analysis 150+ sports modes: Multiple training options with precise tracking of your activities 5ATM Water Resistant: Suitable for swimming and other water activities up to 50 meters deep 21 days battery life: long lasting energy for everyday life, including fitness tracking