Operating system HarmonyOS Memory storage capacity 4 GB Special features notifications Battery capacity 451 Milliamp Hours Connectivity technology Bluetooth, GPS, NFC, Wi-Fi About this item Multi-sensing X-TAP Technology: Experience the power of miniaturized innovation with the HUAWEI X-TAP sensor – a compact module that combines ECG, PPG and a 10-stage Tactile Sensor for fast and highly accurate readings, wherever and whenever you want. Health Glance: Press and hold the HUAWEI X-TAP sensor for 3 seconds to perform a One-tap Health Glance check and receive a report with up to 10 key health indicators and a personal analysis within a minute. Superior Materials: Aviation Grade Titanium (Only the Silver, Brown and Purple editions of the HUAWEI WATCH 5 46mm), 904L Stainless Steel (Only the Sand Gold and Beige editions of the HUAWEI WATCH 5 42mm), Spherical Sapphire Glass, LTPO 2.0 AMOLED Display, With Kármán line-inspired curves and futuristic technology in An iconic, streamlined design, this watch offers a revolutionary look that is as comfortable as it is progressive. Stay connected, without compromise; Call without your phone thanks to powerful eSIM services. Powerful Wi-Fi 6 keeps you connected all day long – up to double the speed of the internet. Two battery modes with one tap: Choose the default mode to take advantage of all the features, or extend your battery life with power saving mode. Switch effortlessly between the two modes in just seconds and adjust your watch to suit your day – for maximum performance every day. Wide Compatible: Stay connected, track your fitness goals and get real-time notifications – all with the HUAWEI WATCH 5, which is compatible with both iOS and Android. Real-time fingertip oxygen saturation measurement: the world's first smartwatch to support real-time, continuous SpO2 measurements via your fingertip. Simply tap the HUAWEI X-TAP sensor to get accurate blood oxygen levels within 10 seconds.