Specification:  Wireless chipset Atheros Built-in battery 5000mAH Polymer  lithium ion battery 3.7V Charging voltage DC 5V 700MA(min), full charging time is 8 hours The output voltage USB2.0 output DC 5V 1A¡¢5V 2A Working frequency Single frequency 2.4 GHz Wireless standards IEEE 802.11 n, IEEE 802.11 g, IEEE 802.11 b Network interface RJ45 100Mbps LAN Multi-function interface Wireless security 64/128 bit WEP encryption wpa2-psk WPA/WPA2 wpa2-psk security  mechanism Speakers Built-in stereo speakers  The antenna type Built-in intelligent high-gain omni-directional antenna  RJ45 *1 pcs Micro-USB *1 pcs SD card slot *1 pcs Audio output *1 pcs 3.5mm USB *2 pcs 5V 1A/2A Machine size 95(L)¡Á84(W)¡Á28(H) mm