AMOLED (active matrix / organic light emitting diode) is an active matrix organic light emitting diode panel. Compared with the traditional liquid crystal panel, AMOLED has the characteristics of fast more→er reaction speed, higher contrast and wider viewing angle. 8 Reasons to choose us: Reason 1: 1.43-inch AMOLED screen, 466*466 high resolution. Reason 2: 4 GB large memory, 3 music playback modes. Reason 3: Heart rate, blood pressure, blood oxygen, sleep monitoring. Reason 4: 300 mAh large battery, Super long battery life. Reason 5: Multiple sport modes, Wrist coach. Reason 6: All-weather screen always-on mode, low power consumption. Reason 7: Support bluetooth calling, Always online, keep in