– Four external antennas give more comprehensive coverage and strengthen the signal. – Dual-band WiFi, 2.4GHz, and 5GHz provide a stronger signal and surf the internet freely. – Latest 802.11ac WiFi standard provides faster access and more reliable streaming. – 128MB SLC Nand Flash ROM for more efficient and reliable. – APP control–manage Internet access as you like with the Xiaomi MiWiFi APP.