The D-Link DIR-819 Wireless AC750 Dual Band Router features dual-band Wi-Fi with combined speeds of up to 750 Mbps, three high-gain external antennas for improved coverage, and four 10/100 Fast Ethernet LAN ports. It also includes web-based setup and supports WPA/WPA2 wireless security.

Wireless specifications
Wi-Fi standard: 802.11ac. It is also backward compatible with older 802.11a/b/g/n devices.
Dual-band: Operates on both 2.4 GHz and 5 GHz bands simultaneously.
2.4 GHz speed: Up to 300 Mbps.
5 GHz speed: Up to 433 Mbps.
Antenna type: Three external antennas (2x2 + 1x1), non-detachable.