Optoma WU5205. Connectivity technology: Wireless, Host interface: USB, Interface: WLAN. Networking standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n. Wireless LAN type: 802.11b, 802.11g, 802.11n, Maximum indoor range: 20 m. Input voltage: 5 V. Width: 14 mm, Depth: 30 mm, Height: 7 mm