Display : 1.43-inches AMOLED Colour Touchscreen Size/Weight : 46mm / 42.6g Buttons : Waterproof Level : 5 ATM Water Resistance Power button + function button, upper button supports the rotatable crown Compatibility : HarmonyOS 2 or later, Android 6.0 or later, iOS 9.0 or later" Connectivity : Bluetooth Speaker & Microphone supported Battery Life : Typical Scenario 14 days Battery : 455mAH & wireless charging