The smartwatch is powered by a 289mAh battery that is said to offer up to 12 days of battery life. Additionally, the watch also offers 5ATM water resistance. The Redmi Watch 3 is compatible with devices running on Android 6.0 or iOS 12 and above operating systems. It measures 42.5836.569.99 mm and weighs around 37g. The watch comes with adjustable silicone straps.