Amazfit GTR 3 Pro, Powerful, Easy-to-use Premium Smartwatch with Cutting-edge Health & Fitness Features, an Ultra HD Display, and Independent Music Storage,1.45-inch Ultra HD AMOLED Display ,Powerful Zepp OS & App-support,Easy 24H Health Management,Classic Navigation Crown, 12 days battery life, 150+ BUILT-IN Sports Models,BLUETOOTH PHONE CALLS