Operating system Android Wear Special features Activity Tracker, Blood oxygen detection, Calendaring, Emotion Monitoring, Sleep Monitoring Battery capacity 180 Connectivity technology Bluetooth Wireless communication standard Bluetooth About this item Comfortable All-day Wearing: Ultra-thin at 8.99 mm, weighing just 15g, paired with skin-friendly fluoroelastomer straps, the slim HUAWEI Band 10 offers you a lightweight feel at all hours Pro-Level Sleep Analysis: The smart band can help track your heart rate, SpO2, respiratory rate, and any abnormal breathing, provide high-level insights on your sleep duration, quality rating, deep sleep ratio and more Emotional Wellbeing Assistant: The Emotional wellbeing app shows your mental wellness with timely tips that help harness the power of positive thinking, and perceptive pet-themed watch faces that show your mood in the moment AI-powered Fitness Monitoring: Powered by advanced 9-axis sensor and AI-enhanced stroke identification technology, HUAWEI Band 10 provides a wealth of data for 100 sports modes, especially the ultra-accurate swimming data Robust Battery Life: Charge for 5 mins and use for 2 days, or charge for full 45 mins to fill your band to the brim! Enjoy up to 8 days of battery life given typical use, and up to 14 days if necessary when you need it most