Operating system Wear OS 3.0 Memory storage capacity 4 GB Special features Activity Tracker, Always On Display, Email, GPS, Wireless Charging Battery capacity 400 Connectivity technology Bluetooth About this item Slimed-down Design for Comfort: Wear a wondrous watch that is sleek and stylish, at just 27 g and 9.5 mm thick, and marvel at its mesmerising 3D wing-like design. Level Up Your Fitness: Experience your favourite activities in a whole new way with customisable training plans, AI-enhanced coaching, and data-driven analysis for 100+ workout modes. Comprehensive Health Mangement:Take your cardiac health to heart, with timely alerts on potential A-fib and premature beat risks, powered by a high-performance PPG sensor and designated software. Up to 10-day battery life: Get a full day of power after 10 minutes of charging, thanks to the 2nd-gen HUAWEI WATCH Wireless SuperCharger. Broadly Compatible: HUAWEI WATCH FIT 4 is compatible with both iOS and Android, so that you can stay connected, track your fitness goals, and get real-time notifications—all on your own terms.