QW33 Smart Watch - Versatile Fitness Tracker for Men & Women。The fitness watch is equipped with more than 100 sports modes, such as walking, running, swimming, hiking, cycling, mountaineering, yoga, etc. Accurately record all-day activities, this fitness tracker for men and women is waterproof with an IP68 rating, you can safely wear it for swimming, washing hands and showering. However, it is not recommended to use it in hot water (sauna) or sea water (diving). This smartwatch for Android and Iphone (Please note: it requires iOS 9.0 and above and Android 6.0 operating system) is equipped with advanced sensors that provide insights to help you better understand your health and adjust your lifestyle. It not only can monitors your health indicators (heart rate, blood oxygen, sleep), but also records women\'s menstrual period. It can also automatically monitor your sleep status and provide a comprehensive sleep quality analysis to help you have a better sleep. Make and receive calls directly from your smartwatch with SMS and calling features through the built-in microphone. Stay connected to SMS and app messages (text, Facebook, WhatsApp, Instagram, Twitter, etc.) and never miss anything important. The AI Voice feature on this smartwatch lets you free your hands to control music playback, check the weather, set alarms, timers, and more by just speaking into your watch (message replies are not supported).