The S8 Pro Max Smart Watch Is Compatible With Both Android And Ios Operating Systems, Ensuring A Seamless Integration With Your Smartphone. Stay Connected And Receive Important Notifications Directly On Your Wrist, So You Never Miss A Call, Message, Or Social Media Update. The Built-In Speaker Enables You To Take Calls Effortlessly, Adding Convenience To Your Daily Routine. Product Specification: Display: 1.99 Inch Connectivity: Android 5.0+, Ios 9.0+ Battery Capacity: 280Mah