Smartwatch with ultra-large 1.89'' HD full touch screen for Men/Women Compatible with most iPhones and Android phones (Android 6.0 and above/iOS 9.0 and above) Bluetooth Call and Message Reminder: connect the smartwatch to your phone via Bluetooth to make/answer/reject calls with the built-in high-quality microphone and speakers. Seamlessly communicate through this smartwatch with Android and iOS smartphones. Receive notifications for calls, WhatsApp, Instagram, Facebook, and SMS text messages, among many others. 24/7 Health Monitoring and Fitness Tracking: a high-performance optical sensor continuously monitors heart rate, blood oxygen, steps, calories, and distance. This smartwatch also monitors additional health metrics including sleep and menstrual cycle tracking which can be synchronized to health apps. Supports over 100+ sports modes with an IP68 waterproof rating, which protects it from sweat, showering, and hand washing. *Caution: not suitable for saltwater or hot water, and prolonged water immersion.