Built-in dual-WAN connection for flexible home and office connectivity
150 Mbps downloads, 5X faster than HSPA+ (3G)1
867 Mbps 802.11ac Wi-Fi, up to 6X faster than 802.11n2
Lightning-fast with 4X coverage
Accurate 10-segment 4G LTE signal strength indicator for easy router positioning
Twin detachable 4G LTE antennas can be upgraded easily
VPN server and VPN client support for secure and private communications
Operating frequencies: 4G FDD-LTE: 800 /1800 /2600, 4G TDD-LTE: 2500 /2600, 3G UMTS: 850 /900 /2100, 2G EDGE/GPRS/GSM: 850 /900 /1800 /1900

3 years warranty
http://www.asus.com/hk/Networking/RTAC66U/